Why are occupants of the international space station weightless?

Answers

Answer 1
The astronauts, the ISS itself and other objects in Earth orbit aren't floating, they are actually falling. ... So, as they accelerate towards the Earth, the Earth curves away beneath them and they never get any closer. Since the astronauts have the same acceleration as the space station, they feel weightless.


( can I please get the brainliest, thanks)

Related Questions

Use interval notation to express the complement of the interval (1,8]

Answers

To express the complement of the interval (1,8] using interval notation,

We first need to find the set of all real numbers that are not in the interval (1,8].

The interval (1,8] contains all real numbers greater than 1 and less than or equal to 8, including 1.

Thus, its complement will contain all real numbers less than or equal to 1 or greater than 8.

Using interval notation, we can express the complement of (1,8] as:

\(\boxed{(-\infty, 1] \cup (8, \infty)}\)

This notation represents the set of all real numbers less than or equal to 1, union with the set of all real numbers greater than 8.

In other words, the complement of (1,8] is the set of all real numbers that are not in the interval (1,8].

We can also verify that our notation is correct by checking that it satisfies the definition of a complement.

The complement of a set is the set of all elements that are not in the original set, and every element that is not in (1,8] is either less than or equal to 1, or greater than 8.

To learn more about interval follow the given link

https://brainly.com/question/30460486

#SPJ11

4. The marginal social cost (MSC) of an electricity generating plant that uses coal is estimated by a consulting firm to be MSC=3Q, where Q is the output. The consulting firm also provides an estimate

Answers

The consulting firm estimates that the marginal social cost (MSC) of the coal-based electricity generating plant is MSC = 3Q, where Q is the output level.

To estimate the marginal social cost (MSC) of an electricity generating plant that uses coal, as provided by a consulting firm as MSC = 3Q, where Q represents the output, we can follow these steps:

Determine the definition of marginal social cost (MSC): MSC represents the additional cost incurred by society for producing one additional unit of output.

Understand the equation: In this case, the consulting firm estimates that the MSC is directly proportional to the output Q, with a constant of proportionality equal to 3.

Calculate the marginal social cost: To determine the MSC at a specific output level, multiply the output Q by the constant 3. For example, if the output is Q = 10, the MSC would be MSC = 3 * 10 = 30.

Interpretation: The estimated MSC of 3Q implies that for every unit of output produced, there is an associated marginal social cost of 3 times that output. This suggests that as the electricity generating plant increases its output, the social cost incurred by society also increases proportionally.

By following these steps, the consulting firm provides an estimate of the marginal social cost (MSC) based on the output level of the coal-based electricity generating plant.

learn more about from the given link

https://brainly.com/question/24279076

#SPJ11

Room temperature is about 77°F. Which temperature is an equivalent temperature?

Answers

Answer:25

Explanation:

Formula(77°F − 32) × 5/9 = 25°C

Answer: The answer is C. 298 K

Explanation:

Why do telescopes have to have a good motorized drive system to move them quickly and smoothly?.

Answers

Telescopes have to have a good motorized drive system to move them quickly and smoothly so that they can continue to point at the object being observed.

Astronomers use a telescope to observe distant things. Curved mirrors are used by the majority of telescopes, including all large telescopes, to collect and concentrate light from the night sky. The original telescopes employed lenses, which were curved pieces of clear glass, to focus light. The ability of an optical telescope to gather light is its most crucial ability. This capability is solely dependent on the telescope's aperture, or the diameter of the clear objective.

The telescope has a motorized drive mechanism that drives it smoothly from east to west at precisely the same rate that Earth is rotating from west to east in order to maintain the telescope's pointing at the object being seen because Earth is revolving.

To read more about telescopes, visit https://brainly.com/question/556195

#SPJ4

IWhat is a hypothesis?

Answers

Answer:

a hypothesis is a explanation made on the basis of limited evidence

Explanation:

Answer:

an hypothesis is an educated guess  based on what you already know

Explanation:

hope this helps

Help please! I hope the given possibles help

Help please! I hope the given possibles help

Answers

Answer:

The answer is "\(5.184 \times 10^{23}\) kg"

Explanation:

Given:

\(g= 6.003 \ \frac{m}{s^2}\\\\G= 6.67 \times 10^{-11} \ \frac{N - m^2}{kg^2}\\\\M=?\\\\radius= 2,400 \ km\\\\\)

Calculating diameter:

\(Diameter =radius \times 2\)

                \(=24\times 10^5 \times 2\\\\=48 \times 10^5 \ m\)

The formula for mass calculation:

\(\to g = G \times \frac{M}{(\frac{d^2}{4})}\\\\\to g=G\times \frac{4M}{d^2}\\\\\to 4M= \frac{g \times d^2}{G} \\\\\to M= \frac{g \times d^2}{4G} \\\\\)

         \(=\frac{6.003 \times (48 \times 10^{5})^2}{4 \times 6.67 \times 10^{-11}}\\\\=\frac{6.003 \times 2,304 \times 10^{10}}{26.68\times 10^{-11}}\\\\=\frac{13,830.912 \times 10^{10}}{26.68\times 10^{-11}}\\\\=518.4 \times 10^{21}\\\\= 5.184 \times 10^{23}\\\\\)

If a baseball is thrown vertically upward with a speed of 60 m/s, then what will be the time taken by the baseball to reach its maximum height. 8.12 s 3.12 s 6.12 s 7.12 s

Answers

When a baseball is thrown vertically upward with an initial velocity of 60 m/s, it takes approximately 6.12 seconds for the ball to reach its maximum height.

When a baseball is thrown vertically upward with a speed of 60 m/s, the time taken by the baseball to reach its maximum height is given by the formula;

`t = v/g`

Where `t` is time taken, `v` is initial velocity and `g` is acceleration due to gravity.

For a ball thrown vertically upwards, `g = -9.8 m/s²` because the acceleration acts opposite to the direction of motion.

The initial velocity is 60 m/s. Therefore, the time taken by the ball to reach its maximum height is:

t = v/g = 60/9.8 ≈ 6.12 s

Therefore, the correct option is 6.12 s.

To know more about maximum height, refer to the link below:

https://brainly.com/question/30496062#

#SPJ11

The Doppler technique can be used to estimate the semimajor axis of a planet's orbit by
A. measuring the time it takes for the star's line-of-sight velocity to cycle from peak to peak, and using Newton's version of Kepler's Third law.
B. measuring the amount by which the starlight is reduced when the planet transits.
C. measuring the speed at which the star orbits the mutual center-of-mass of the star and planet, and using Newton's theory of gravity.
D. measuring the asymmetries in the velocity curve.

Answers

The Doppler technique can be used to estimate the semimajor axis of a planet's orbit by measuring the speed at which the star orbits the mutual center-of-mass of the star and planet, and using Newton's theory of gravity.

The Doppler technique, also known as the radial velocity method, is a common method for detecting exoplanets by measuring the slight wobble of a star caused by the gravitational pull of an orbiting planet. This wobble induces shifts in the star's spectral lines, which can be detected as changes in the star's line-of-sight velocity. By observing these velocity changes, astronomers can determine the speed at which the star is moving toward or away from us. This velocity change is directly related to the mass and orbital properties of the planet, including the semimajor axis of its orbit. Newton's theory of gravity provides the necessary mathematical framework to relate the observed velocity changes to the orbital parameters of the planet. By analyzing the pattern of the star's line-of-sight velocity changes over time, astronomers can estimate the semimajor axis of the planet's orbit, which represents the average distance between the planet and its host star. This information is crucial for understanding the orbital dynamics and characteristics of exoplanetary systems.

To know more about Doppler technique visit:

https://brainly.com/question/32170744

#SPJ11

Give a real life example for each the the simple machine types 1. lever 2. Incline 3. Wheel and axle 4. Wedge 5. Pulley 6. Screw​

Answers

Answer:

you need a wheel And axle for the bike.

You need the pulley for the chain to pull the tires

you need the inclined plane to test the bike

you need a screw to make sure the wheel and axle is in place.

Explanation:

Once an answer is submitted, you will be unable to return to this part. A 150-kg crate D is suspended from a ring at Aby a length of rope. The crate is held in certain location by two blocks, B and C, which are attached to the ring at Aby rope segments wrapped around frictionless pulleys. You want to position the crate such that the angle that rope AC makes in a counterclockwise direction from the positive x-axis is 30° as shown. The mass of block B is 135 kg. The mass of block C is adjustable. You decide to calculate what the mass of block C needs to be in order to keep crate D in the desired position. You also want to calculate , which represents the angle that rope AB makes in a clockwise direction from the negative x-axis when crate D is in the desired position. X 00:36:18 180° Choose which value represents the mass of block C that would keep crate D In equilibrium. Choose which value represents the mass of block C that would keep crate D In equilibrium. Multiple Choice 280 kg 20 kg 784.8 kg 196.2 kg 111.74 kg

Answers

The value that represents the mass of block C that would keep crate D in equilibrium is 196.2 kg (Option D).

To determine of value that represents the mass of block C that would keep crate D in equilibrium, ee can begin by determining the tension in the ropes. Since the crate is held in a certain location by two blocks, the tension in the ropes should be equal. We can use this fact to calculate the tension in the ropes by assuming that they have the same magnitude.

In this case, let T be the tension in each rope segment. The forces acting on the system can be represented in the following free-body diagram:

For the x-direction: T sin 30° = T sin 60° + µg = 0

where µ is the coefficient of friction and g is the acceleration due to gravity. Since the pulleys are frictionless, µ = 0. Therefore, we can simplify the equation as follows:

T sin 30° = T sin 60°

Dividing both sides by T:

sin 30° = sin 60°/2

This gives us: T = (2/√3) mg where m is the total mass of the system and g is the acceleration due to gravity.

Substituting the given values, we obtain:

T = (2/√3) × 150 × 9.81 ≈ 1962 N

Next, we can use the law of the lever to calculate the mass of block C required to keep the crate in equilibrium. According to this law, the sum of the moments acting on the system must be zero. We can choose the point where the ring is attached to the rope as the pivot. This gives us the following equation:

(135 kg)(9.81 m/s²)(3 m) + (mC)(9.81 m/s²)(6 m) - (150 kg)(9.81 m/s²)(4.5 m) - (1962 N)(3 m) = 0

Simplifying: (135)(3) + (6mC) - (150)(4.5) - (1962)(3) = 0

Rearranging: 6mC = 150(4.5) + 1962 - 135(3)

6mC = 2127

mC ≈ 196.2 kg

Therefore, the value that represents the mass of block C required to keep crate D in equilibrium is approximately 196.2 kg. Thus, the correct option is D.

Learn more about crate: https://brainly.com/question/32310523

#SPJ11

A 3-kilogram ball is accelerated from rest to a speed of 10 m/sec

Answers

The result of multiplying a particle's mass by its velocity is the fluctuation in momentum of a ball, which is 30 kg per second. Since momentum has both a magnitude and a direction, it is a vector quantity.

In the actual world, what is momentum?

Almost every action that involves motion has momentum. It is an important tenet of physicsFor instance, if a team is moving forward and trying to stop, it will be difficult.

mv - mu, where u = 0 and v = 10 m/s, equals change in momentum.  Note that the ball moved from rest, therefore its initial velocity was zero (u = 0).

Momentum change is equal to mv mu, which is 3*10 - 3*0, or 30.

30 kg/s = change in momentum.

What are examples and momentum?

Momentum can be compared to the "power" a moving body has, or the amount of force it can exert on another body. For instance, a baseball that is thrown quickly (high velocity) and has a small bulk (big mass) can have the exact same momentum as a bowling ball that is travelling very slowly (low velocity).

To know more about momentum visit:

https://brainly.com/question/30677308

#SPJ1

PLEASE ASAP


-4m
-3M
-2m
-1m
0m
1m
2m
3M
4m

PLEASE ASAP-4m-3M-2m-1m0m1m2m3M4m

Answers

Answer:

-1

Explanation:

count 3 spaces in T and go to the object and it should be at -1. I hope this is correct and helps you!

Answer:

Explanation:

3

m

3

(

2

m

3

12

m

2

+

2

m

+

25

)

Apply the distributive property.

3

m

3

(

2

m

3

)

3

m

3

(

12

m

2

)

3

m

3

(

2

m

)

3

m

3

25

Simplify.

Tap for fewer steps...

Rewrite using the commutative property of multiplication.

3

2

m

3

m

3

3

m

3

(

12

m

2

)

3

m

3

(

2

m

)

3

m

3

25

Rewrite using the commutative property of multiplication.

3

2

m

3

m

3

3

12

m

3

m

2

3

m

3

(

2

m

)

3

m

3

25

Rewrite using the commutative property of multiplication.

3

2

m

3

m

3

3

12

m

3

m

2

3

2

m

3

m

3

m

3

25

Multiply

25

by

3

.

3

2

m

3

m

3

3

12

m

3

m

2

3

2

m

3

m

75

m

3

Simplify each term.

Tap for fewer steps...

Multiply

m

3

by

m

3

by adding the exponents.

Tap for more steps...

3

2

m

6

3

12

m

3

m

2

3

2

m

3

m

75

m

3

Multiply

3

by

2

.

6

m

6

3

12

m

3

m

2

3

2

m

3

m

75

m

3

Multiply

m

3

by

m

2

by adding the exponents.

Tap for more steps...

6

m

6

3

12

m

5

3

2

m

3

m

75

m

3

Multiply

3

by

12

.

6

m

6

+

36

m

5

3

2

m

3

m

75

m

3

Multiply

m

3

by

m

by adding the exponents.

Tap for more steps...

6

m

6

+

36

m

5

3

2

m

4

75

m

3

Multiply

3

by

2

.

6

m

6

+

36

m

5

6

m

4

75

m

3

What is the speed of an object at rest?
a. 0.0 m/s
c. 9.8 m/s
b. 1.0 m/s
d. 9.81 m/s

Answers

Answer:

A 0.0 m/s

An object at rear is not moving so it is morning 0m every second.

a woman changes a flat tire with a tire iron 50.0 cm long. she exerts a force of 53.0 N. How much torque does she produce?

Answers

The woman produces a torque of 26.5 Nm while changing the flat tire with a 50.0 cm long tire iron and exerting a force of 53.0 N. To find the torque produced, we can use the following formula:


Torque (τ) = Force (F) × Lever arm length (r) × sin(θ), where:
τ = Torque
F = Force (53.0 N in this case)
r = Lever arm length (50.0 cm or 0.5 m in this case)
θ = Angle between force and lever arm (assumed to be 90 degrees for maximum torque)



Since the woman is using the tire iron perpendicular to the tire, we can assume that the angle between the force and the lever arm is 90 degrees. In this case, the sine of 90 degrees is 1, so the formula simplifies to:
Torque (τ) = Force (F) × Lever arm length (r)
Now, we can plug in the values given in the question:
τ = 53.0 N × 0.5 m
τ = 26.5 Nm.So, the woman produces a torque of 26.5 Nm

To know more about torque click here

brainly.com/question/30719994

#SPJ11

Tina just threw a 0.15 kg ball straight up in the air. If the ball reaches
a height of 4.0 m, what is its gravitational potential energy at this
height?
A-27j
B-5.9j
C-13j
D-2.5j

Answers

Answer:

13 j

Explanation:

I took the test and got it wrong lol

a stream 1 km wide has a constant current of 4 km/h. at what angle to the shore should a person navigate a boat, which is maintaining a constant speed of 16 km/h, in order to reach a point directly opposite? (give your answer for acute angle in decimal degrees, rounded to one decimal place.)

Answers

angle to the shore should a person navigate a boat, which is maintaining a constant speed of 16 km/h, in order to reach a point directly opposite is 75.5 degrees.

Since the stream is flowing parallel alongside the shore, it takes the vector form of  v {stream} = [0,4]

the boat velocity is perpendicular to the stream, it's takes the vector form of  v{boat} = [-16,0]

The resultant velocity of the boat is the sum of the velocity of the boat and stream, thus it takes the form

v{total} =  [-16,0] +  [0,4]

           = [ -16,4]

the cosine of angle to the shore,

                  cos {theta} = v{total} . v {stream} / ||v{total} || x ||v {stream}||

                                     =  [ -16,4] . [0,4] / (16x4)

                                     = 16/64

                                     = 0.25

                       angle = 75.7 degrees.

Learn more about the Angle here :

https://brainly.com/question/28451077

#SPJ4

A projectile is launched from a cannon at ground level with an initial velocity vo = 445 m/s at an initial angle o 62° from the horizontal as shown in the figure. Neglect air resistance and assume g is constant. (a) Calculate the magnitude and the direction (from the horizontal) of the velocity of the projectile at time t = 28 s after launch. (b) At time t = 28 s after launch, calculate the radius of curvature of the path. (c) At time t = jectile. 28s after launch, calculate the tangential acceleration of the projectile
(d) What is the projectile's maximum height?

Answers

(a) The magnitude of the projectile's velocity is 445 m/s, and the direction is 62°. (b) The radius of curvature is infinite. (c) The acceleration of the projectile is zero. (d) Maximum height is 86,632.65 meters.

(a) To calculate the magnitude and direction of the velocity at time t = 28 s, we can break the initial velocity into horizontal and vertical components. The horizontal component remains constant at 445 m/s throughout the motion. The vertical component can be determined using the equation: \(v_{y}\) = \(v_o}\) * sin(theta), where \(v_{y}\) is the vertical component, \(v_o}\) is the initial velocity, and theta is the launch angle. Substituting the given values, we get \(v_{y}\) = 445 * sin(62°) ≈ 380.28 m/s. The magnitude of the velocity can be found using the Pythagorean theorem: v = sqrt(\(v_{x}\)² + \(v_{y}\)²) = sqrt(445² + 380.28²) ≈ 570.13 m/s. The direction can be found using the tangent of the angle: theta = arctan(\(v_{y}\) / \(v_{x}\)) = arctan(380.28 / 445) ≈ 42.52° above the horizontal.

(b) The radius of curvature of the projectile's path can be calculated using the formula: R = v² / (g * sin(2*θ)), where R is the radius of curvature, v is the magnitude of the velocity, g is the acceleration due to gravity, and theta is the launch angle. Substituting the known values, we get R = (570.13²) / (9.8 * sin(2*62°)) ≈ infinity. Since the radius of curvature is infinite, the path of the projectile is a parabolic trajectory.

(c) At time t = 28 s, the tangential acceleration of the projectile can be calculated using the formula: \(a_{t}\) = a * cos(θ), where \(a_{t}\) is the tangential acceleration, a is the acceleration due to gravity, and theta is the launch angle. Substituting the values, we have \(a_{t}\) = 9.8 * cos(62°) ≈ 4.97 m/s². Therefore, the tangential acceleration of the projectile is approximately 4.97 m/s².

(d) To find the maximum height reached by the projectile, we can use the vertical motion equation: h = \(v_{o}\)² * sin²(θ) / (2 * g), where h is the maximum height. Substituting the given values, we get h = (445²) * sin²(62°) / (2 * 9.8) ≈ 86,632.65 meters. Therefore, the projectile's maximum height is approximately 86,632.65 meters.

To learn more about the projectile visit:

brainly.com/question/10680035

#SPJ11

The experimenter had observed that some colors of birthday balloons seem to be harder to inflate than others. She ran this experiment to determine whether balloons of different colors are similar in terms of the time taken for inflation to a diameter of 7 inches. Four colors were selected from a single manufacturer. An assistant blew up the balloons and the experimenter recorded the times (to the nearest 1/10 second) with a stop watch. Questions for all the following cases: Please identify: Independent variable and number of level? Dependent variable? Study design (i.e., between or within-subject design)? Confounding variable (if any)? Violation of Validity (if measureable)?

Answers

Case: The effect of balloon color on inflation time.

Independent variable: Balloon color (categorical) with four levels (e.g., red, blue, green, yellow).

Dependent variable: Time taken for inflation to a diameter of 7 inches (continuous, measured in seconds).

Study design: Within-subject design (the same group of participants inflating balloons of different colors).

Confounding variable: Possible confounding variables could be the size or material of the balloons, as these factors might affect the inflation time. To control for this, it would be important to ensure that all balloons used in the experiment are of the same size and material.

Violation of Validity: A violation of validity could occur if the measurement of inflation time is not accurate or consistent (e.g., if the stopwatch used is unreliable or if the experimenter's recording of times is inconsistent). Ensuring proper measurement procedures and equipment would help mitigate this violation.

Learn more about balloon here:

https://brainly.com/question/27156060

#SPJ11

For ha u=25 s=5, n=25 at a=0. 10, what is upper critical value of the test statistic with 3 decimal places

Answers

The upper critical value of the test statistic, with a significance level of 0.10, is 1.96. It is determined from the standard normal distribution table or software.

The upper critical value of the test statistic is a specific value that is used to determine the rejection region in a statistical hypothesis test. In this case, the test statistic is not specified, but we are given the values of u (mean), s (standard deviation), n (sample size), and a (significance level).

To find the upper critical value, we need to calculate the critical value from the standard normal distribution table or use a statistical software or calculator. The critical value corresponds to the z-score that leaves an area of a (significance level) in the right tail of the standard normal distribution.

Since the significance level is not specified in the question, we will assume a standard significance level of 0.05 (5%). From the standard normal distribution table, the z-score corresponding to a right-tail area of 0.05 is approximately 1.96.

Learn more about critical value

brainly.com/question/7232596

#SPJ11

¿Por qué crees que es importante desarrollar actividad física habitualmente, así como practicar hábitos de higiene saludable?

Answers

La actividad física posee muchos beneficios para la salud. Algunos de estos beneficios son la reducción en el riesgo de padecer enfermedades, control del peso, fortalecimiento de huesos y músculos, etc.

La actividad física regular previene la aparición de enfermedades cardiovasculares al evitar la acumulación de colesterol en las arterias que transportan sangre a diferentes áreas del organismo.

La actividad física consume calorías, especialmente aquellas provenientes de los lípidos (grasas), con lo cual permite controlar el peso y reducir el riesgo de obesidad.

La actividad física también ayuda al fortalecimiento de los tejido oseo, con lo cual previniendo enfermedades relacionadas tales como la osteoporosis.

Aprende más sobre este tema en:

https://brainly.com/question/21449239?referrer=searchResults

an aiplane is traveling at 500 mph for 3.5 hours. how far did the plane travel

Answers

Answer:

1750mile

Explanation:

500/h

3.5h=3.5×500=1750

A van slows down uniformly from 17 m/s to 0 m/s in 5 s. How far does it travel before stopping?

Procedure is required.

Answers

Answer:

Before stopping, the van travels 42.5 m

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

\(v_f=v_o+at\qquad\qquad [1]\)

The distance traveled by the object is given by:

\(\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]\)

The van slows down uniformly from v0=17 m/s to vf=0 m/s in t=5 s. The acceleration can be calculated by solving [1] for a:

\(\displaystyle a=\frac{v_f-v_o}{t}\)

\(\displaystyle a=\frac{0-17}{5}=-3.4\ m/s^2\)

The distance covered is:

\(\displaystyle x=17\cdot 5+\frac{(-3.4)\cdot 5^2}{2}\)

\(\displaystyle x=85-42.5=42.5\)

Before stopping, the van travels 42.5 m

a)Explain the terms plastic deformation and elastic deformation. b)Plot a graph of stress-strain of a metal. State and explain important features of a graph. c) A copper wire 200cm long and 1.22mm in diameter is fixed horizontally below the two supports 200cm apart. Find the mass in grams of the load which , when suspended as the midpoint of the wire, produces a sang of 2cm at that point.(young modulus for copper in 1.2×10^11 N/m^3)​

Answers

Answer:

a) Plastic deformation is a permanent deformation that occurs in a material when it is subjected to a stress beyond its yield point, causing a rearrangement of its internal structure. The material will not return to its original shape after the stress is removed.

Elastic deformation, on the other hand, is a temporary deformation that occurs in a material when it is subjected to a stress within its elastic limit, causing a change in its shape. The material will return to its original shape once the stress is removed.

b) The stress-strain graph of a metal typically shows a linear elastic region, a yield point, a plastic deformation region, and a fracture point. The important features of the graph include:

Elastic region: The region where the material deforms elastically and returns to its original shape once the stress is removed. The slope of the line in this region is known as the modulus of elasticity or Young's modulus.Yield point: The point at which the material begins to deform plastically and permanently.Plastic deformation region: The region where the material undergoes plastic deformation, and the stress increases with strain.Fracture point: The point at which the material fails and fractures.

c) The formula to find the mass of the load is: m = (πr^2Lρg)/2

where:

r = radius of the wire = 1.22/2 x 10^-3 m

L = length of the wire = 200 cm = 2 m

ρ = density of copper = 8.96 x 10^3 kg/m^3

g = acceleration due to gravity = 9.81 m/s^2

First, we need to find the elongation of the wire when it is suspended by the load. The elongation is given by: ΔL = FL/AY

where:

F = force exerted by the load

A = cross-sectional area of the wire = πr^2

Y = Young's modulus of copper = 1.2 x 10^11 N/m^2

The sag of the wire is 2 cm, which means the elongation is 4 cm. Converting to meters, ΔL = 0.04 m.

Substituting the values into the formula for the mass of the load:

m = (πr^2Lρg)/2 = (π x (1.22/2 x 10^-3)^2 x 2 x 8.96 x 10^3 x 9.81 x 0.04)/2 = 10.9 g (rounded to one decimal place)

Therefore, the mass of the load that produces a sag of 2 cm is 10.9 grams

how is charged particles related to electric current, electric circuits, and resistance

Answers

Charged particles are fundamental to the behavior of electric currents, electric circuits, and resistance. An electric current is the flow of charged particles, typically electrons, through a conductor.

The flow of charged particles generates an electric field that induces a potential difference, or voltage, across the conductor.Electric circuits are constructed by connecting conductors and electrical components, such as resistors, capacitors, and inductors, in a specific configuration. The arrangement of the components determines how the current flows through the circuit.

The flow of current through the circuit depends on the resistance offered by the components in the circuit and the potential difference across the circuit.Resistance is the property of a conductor that opposes the flow of current. The resistance of a conductor is proportional to the number of charged particles in the conductor, the length of the conductor, and the cross-sectional area of the conductor. The resistance can also be affected by the temperature of the conductor and its material properties.

In summary, charged particles are responsible for generating electric currents that flow through electrical circuits. The behavior of the currents is determined by the arrangement of the components in the circuit and the resistance offered by the conductors and components. Resistance is a fundamental property of a conductor that opposes the flow of charged particles and can be affected by various factors.

For more such questions on resistance visit:

https://brainly.com/question/7669692

#SPJ11

How would you obtain a mean value for the specific heat
capacity of a material?

Answers

The heat capacity and the specific heat are related by C=cm or c=C/m. The mass m, specific heat c, change in temperature ΔT, and heat added (or subtracted) Q are related by the equation: Q=mcΔT. Values of specific heat are dependent on the properties and phase of a given substance.

A box of mass 60 kg is at rest on a horizontal floor that has a static coefficient of friction of 0.6 and a kinetic coefficient of 0.25
a)The minimum force necessary to start moving the box
b) The friction force and the acceleration of the box if a horizontal force of 400 N is applied

Answers

Answer:

a) F = 353.2 N

b) \(F_{f} = 147.2 N \)

   a = 4.21 m/s²

Explanation:

a) The minimum force necessary to start moving the box s given by:       

\(\Sigma F = 0\)

\( F - \mu_{s}N = 0 \)

\( F = \mu_{s}mg \)

Where:

F: is the force applied to move the box

μs: is the static coefficient of friction = 0.6          

m: is the mass = 60 kg

g: is the gravity = 9.81 m/s²

\( F = 0.6*60 kg*9.81 m/s^{2} = 353.2 N \)

b) The acceleration is:

\( F - F_{f} = ma \)

\( F - \mu_{k}mg = ma \)              

\( a = \frac{F - \mu_{k}mg}{m} = \frac{400 N - 0.25*60 kg*9.81 m/s^{2}}{60 kg} = 4.21 m/s^{2} \)

Now, the friction force is:

\( F_{f} = \mu_{k}mg = 0.25*60 kg*9.81 m/s^{2} = 147.2 N \)

I hope it helps you!    

The diagram below shows a simple electrical circuit. Which of the following would always increase the flow of current through the lights in the circuit shown above? a Decreasing the battery voltage and decreasing the resistance of the lights. b Increasing the battery voltage and decreasing the resistance of the lights. c Increasing the battery voltage and increasing the resistance of the lights. d Decreasing the battery voltage and increasing the resistance of the lights.

Answers

Decreasing the battery voltage and increasing the resistance of the lights. This is shown by option marked D

How does the flow of current increase?

The potential difference across the lights reduces when the battery voltage is decreased. As a result, there is less electrical energy available to power the lights. The lights may therefore fade or cease to operate at full brightness.

Depending on the particular properties of the lights, the reduced voltage may have an impact on their brightness or intensity.

Learn more about electric circuit:https://brainly.com/question/29765546

#SPJ1

The diagram below shows a simple electrical circuit. Which of the following would always increase the

a small metal sphere with a net charge of is touched to a small second metal sphere that is initially neutral. the spheres are then placed apart. what is the force between the spheres?

Answers

The force between the spheres would be an electrostatic repulsion force since the spheres have the same charge after they are touched.

What is coulombs law?

Coulomb's Law is a fundamental principle in physics that describes the electric force between two charges. It states that the force between two-point charges is proportional to the product of the charges and inversely proportional to the square of the distance between the charges. Mathematically, Coulomb's Law is represented as F = kq1q2/r², where F is the force between the charges, k is the Coulomb constant, q1 and q2 are the charges, and r is the distance between the charges. The direction of the force is along the line connecting the two charges and is attractive if the charges are opposite in sign and repulsive if the charges are of the same sign.

The strength of the force would depend on the magnitude of the charge on each sphere and the distance between them according to Coulomb's Law, which states that the force between two-point charges is given by: F = kq1q2/r², where k is the Coulomb constant, q1 and q2 are the charges of the two spheres, and the distance between the spheres center is r.

To know more about force, visit:

https://brainly.com/question/13191643

#SPJ4

A = 10x - 2y B = 5x + 4y C=2A + B What is the magnitude of the vector C? Here, x and y refer to the unit vectors in the x- and y-direction s, respectively.

Answers

Therefore, the magnitude of vector C is 25.

Given:A = 10x - 2yB = 5x + 4yC=2A + BNow we have to calculate the magnitude of vector C.Let's calculate each part of the vector C first;2A = 2(10x-2y) = 20x - 4yB = 5x + 4yC = 2A + B= (20x-4y)+(5x+4y)=25xNow we can calculate the magnitude of vector C by using the formula;|C| = √(Cx²+Cy²+Cz²)Here, we only have two dimensions, so the formula becomes;|C| = √(Cx²+Cy²)|C| = √(25²) = 25. Therefore, the magnitude of vector C is 25.

To know more about vector visit:

https://brainly.com/question/18441260

#SPJ11

An object weighs 59N on earth where g is 9.8N/kg.Find the acceleration due to gravity on a planet where the same object weighs 40.5N​

Answers

Use Newton's second law.

The object's mass is the same everywhere, so first compute the mass using the object's weight on Earth:

F = ma   ⇒   59 N = m (9.8 N/kg)   ⇒   m ≈ 6.02041 kg

Now compute the acceleration on the other planet:

F = ma   ⇒   40.5 N ≈ (6.02041 kg) a

⇒   a ≈ 6.72712 m/s² ≈ 6.7 m/s² ≈ 1.5g

where g = 9.8 m/s², just to express this acceleration relative to the gravitational acceleration at Earth's surface.

Other Questions
which of the following structures secretes renin when blood pressure in the afferent arteriole drops? a. renal tubule b. proximal convoluted tubule c. juxtaglomerular apparatus d. both a and b Blackberries cost $8 per pound. Raspberries cost $9 per pound. Janelle can spend a maximum of $ 40 Lawrence Company has cash in bank of $15,000, restricted cash in a separate account of $4,000, and a bank overdraft in an account at another bank of $2,000. Lawrence should report cash of O $13,000. D O $15,000. O $18,000. $19,000. pls help :( What is the sum of the roots of the quadratic functionbelow?(3x + 2)(3x - 5) An object moves around a circular path at a constant speed and makes five complete revolutions in 20 seconds. What is the period of rotation?A)4 sB)5 sC)20 s First let's go old-school. Solve the following problem using tools you learned in first-semester calculus. Task D: Suppose you know that f (x)=125x and that f(0)=f(1)=0. at a volleyball game tournament the amount of sport drink in a team's cooler decoder decrease decrease at a rate of 3 quarts per game.What integer represents the total change in the number of quarts of sports drink in the cooler after two games If cos0 = [tex]\frac{3}{\sqrt{23}}[/tex] and angle 0 is in Quadrant I, what is the exact value of tan20 in simplest radical form? How many 250ml glasses can be filled with 2l of water? Find f(-3) when f(x) = -x+1 jean likes to make sure the speeches she writes are clear, use precise language and get straight to the point. what type of communication style is she using? Use the quotient rule to prove that the power rule is valid for negative whole number powers. An equilateral triangle isAlways/sometimes/neversimilar to a scalene triangle, because we cansometimes/always/never map one onto the other using only dilations and rigidtransformations? Find the price (in dollars per unit) that will maximize profit for the demand and cost functions, where p is the price, x is the number of units, and Cis the cost. Demand Function p= 105-x Cost Function C= 100+ 35x per Dit If the parent cell has 40 genes how many will each daughter cell have ? A. 20B. 80C. 40 Cupcake Heaven bakery shop brought their famous cupcakes to the bazaar to raise money for charity. It costs them $0.30 each to make the cupcakes. If they sell the cupcakes for $1.50 each, what is their profit margin that will go to charity? Artificial intelligence (AI) refers to the intelligence of machines. The term also refers to the developing field of computer science that is responsible for creating intelligent machines. Scientists and engineers are working on computer software intended to imitate the human thought process, such as learning and reasoning. A computer can already do some things better than people, such as store information, solve numerical problems, and complete repetitive tasks. Computers have been able to perform these kinds of tasks by using algorithms, which are clearly defined sets of instructions. In contrast, AI software only presents a problem to the computer, not the steps necessary to solve the problem. The computer itself determines how to solve the problem. AI programs contain two essential components. First, the computer program must contain a knowledge base that includes different types of information, such as facts, concepts, and theories. The second component is enabling the computer to draw inferences, which means that the computer can form a conclusion based on facts and knowledge. In this scenario, a computer with AI intelligence is presented with a problem to be solved. The computer then searches its knowledge base for specific conditions or patterns that fit the problem to be solved. This ability of AI programs to solve a problem based on facts rather than on a fixed series of steps is what mimics the thought process of a human brain. Whether or not a computer can really think is still up for debate, even though there are numerous examples of machines that can be said to resemble human intelligence. For example, IBM developed Deep Blue, a chess-playing computer that defeated Garry Kasparov in 1997. However, even these kinds of computer programs are limited because they can only do what they have been programmed to do. Most scientists and researchers agree that machines currently lack the subtlety and range of human thought. However, as AI technology develops, more questions and debate will surely arise. The most important issue going forward is how AI technology can best serve the humans who created it.1Select the correct answer.Read the last sentence of the passage."The most important issue going forward is how AI technology can best serve the humans who created it."How does this sentence engage the reader in the subject material?A. The author uses humor to encourage the reader to accept the information.B. The author invites the reader to consider the possibilities of this technology.C. The author draws a conclusion that the reader is expected to accept.D. The author tells the reader that this technology will improve his or her life. Find the points on the curve y = 20x closest to the point (0,1). ) and From the top of a 100 ft air traffic control tower, an airplane is observed flying in at an angle of 32. If the airplane is 3000 feet away, what is the plane's altitude? a nurse is preparing to administer phenazopyridine to a client. to help promote maximum effectiveness, the nurse should prioritize which time to administer this drug?