Answer: section 2 and 4
Explanation:
I had this problem before and that was the answer.
How many laws of newton are there?
Answer:
There are three laws of newton
A stone is dropped from the edge of a roof, and hits the ground with a velocity of -120 feet per second. How high (in feet) is the roof?
The Height of the roof is 225 feet .
Calculation :
y = h - gt2/2 = 0;
h = gt2/2;
v(t) = dy/dt = - gt;
t = - v(t)/g;
h = g/2·v2(t)/g2
= v2(t)/(2g)
= 120²ft2/s²/(2·32ft/s²) =
225 ft
In mathematics, height is defined as the vertical distance from top to bottom of an object. Also called "height". The term geometry height refers to the measurement of an object along the coordinate geometry's y-axis.
Learn more about Height here :
https://brainly.com/question/28122539
#SPJ4
A force of 5.2 N acts on a 19 kg body initially at rest. Compute the work done by the force in the first second.
The work done by the force of 5.2 N acting on a 19 kg body initially at rest in the first second is 0.70922 J.
In order to compute the work done by the force in the first second when a force of 5.2 N acts on a 19 kg body initially at rest, we need to use the formula for work done, which is as follows:
Work Done (W) = Force (F) × Displacement (d)
Here,
force acting on the body = F = 5.2 N
Initial velocity of the body = u = 0 (as it is initially at rest)
Mass of the body = m = 19 kg
Time taken by the body to move = t = 1 second
Using the formula for force, we have,
Force (F) = mass (m) × acceleration (a)
=> a = F/m
Substituting the values, we get,
a = 5.2/19 = 0.2737 m/s²
Using the formula for displacement, we have,
Displacement (d) = ut + (1/2)at²
Substituting the values, we get,
d = 0 + (1/2) × 0.2737 × (1)² = 0.13685 m
Now, using the formula for work done, we have,
W = F × d
Substituting the values, we get,
W = 5.2 × 0.13685 = 0.70922 Joules
Therefore, the work done by the force in the first second is 0.70922 J.
Learn more about work done:
https://brainly.com/question/28356414
#SPJ11
What is the relationship between distance and sound wave return time?
Canada and United States both have economies
Answer:
That is true but US has the largest economy of the world. Canada is in the top of the list in economy.
Explanation:
Answer:
The United States has a much stronger economy than Canada tho due to Canada's icy terrain.
Explanation:
John has a utility function of the following: UL, C) = L ^BC ^(1-ẞ), where L is leisure and C is consumption. If he works, he receives a real wage w. Outside of the labor market, he has nonlabor market income V. And his endowment of time T is normalized to 1. And the price of goods p is also normalized to 1.
(a) Please write down his budget constraint.
(b) Assuming ẞ = 1/2, V = 100, w = 200, what is his optimal supply of labor?
(c) How much total income does he have?
(d) How much consumption will he make?
(e) Now, consider the case where John is subject to a 10% income tax on labor income only. What is his new optimal supply of labor?
(a) The budget constraint can be written as: C = wL + V, where C is consumption, w is the real wage, L is leisure, and V is non-labor market income.
(b) With ẞ = 1/2, V = 100, and w = 200, John's optimal supply of labor cannot be determined without information about his preferences for leisure and consumption. The utility function only represents his preferences, but we need additional information to determine the specific amount of labor he would choose to supply.
(c) John's total income is the sum of his labor income and non-labor market income: Total income = Labor income + Non-labor income = wL + V. Without knowing the specific value of L, we cannot calculate the total income.
(d) Similarly, without knowing John's preferences for leisure and consumption, we cannot determine the specific level of consumption he would choose.
(e) In the case where John is subject to a 10% income tax on labor income only, his new optimal supply of labor would depend on the tax rate's impact on his preferences and the trade-off between leisure and consumption. Without further information on his preferences and the specific tax structure, we cannot determine the new optimal supply of labor.
Additional information about John's preferences for leisure and consumption, as well as the specific tax structure, is necessary to calculate his optimal labor supply, total income, consumption, and the impact of the income tax on his labor supply.
To know more about budget , visit
https://brainly.com/question/29792126
#SPJ11
Can a rock take only one path through the rock cycle?
What is a short circuit?
Answer:
A short circuit is an abnormal connection between two nodes of an electric circuit intended to be at different voltages. This results in an electric current limited only by the Thévenin equivalent resistance of the rest of the network which can cause circuit damage, overheating, fire or explosion.
hope it helps.Please give me brainliest O:-)
Answer:
A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance.
Hydropower is the production of electrical energy through the use of
A. gravitational force
B. stored energy
C. water flowing upwards
D. water resistance
Answer:
gravitational force .. .. .
Explanation:
hope it helps^o^
A 7.72 kg box is sliding to the right at a constant velocity of 12:14. If the box has a force 53.14 applied to the right, what is the magnitude of the force of friction?
Type your answer...
Well, you didn't tell us what the unit of the 53.14 is. But whatever it is, the force of friction is the same 53.14 of them.
The only way the box can move with constant velocity is if the forces acting on it all add up to zero. So the force of friction to the left, holding it back, must be exactly equal to the force pushng it forward to the right.
Notice that none of this depends on the mass of the box, or WHAT the constant velocity IS. None of that information matters, or makes any difference. It's only included in the question to confuse and distract us.
Your'e at your new high school.....You go into the bathroom and there's students smoking in there. I mean like a real smoke fest. Some of them you know, most you don't as your'e the new freshman. Suddenly, the school security barges in to take everyone who's in the bathroom to the principal's office. You on the other hand was just trying to use the bathroom and never got to lol! You and everyone in the bathroom end up in the office about to get in big trouble. What do you do?
Answer:
Just get searched then go back to class
Explanation: similar situation
how do scientist know about the interior of the earth?
Answer:
scientists rely on seismic waves—shock waves generated by earthquakes and explosions that travel through Earth and across its surface—to reveal the structure of the interior of the planet.
Bodily injury due to slips and falls is considered a physical hazard from conditions involving:
Bodily injury due to slips and falls is considered a physical hazard from conditions involving: surface residues.
Causes of InjuryIn general, injuries can be caused by:
Accidents and trauma, such as falls or hard knocks. Not warming up properly before exercising. Using inappropriate equipment or improper technique while exercising. Too push yourself (excessive exercise). Almost any part of the body can be injured, including muscles, bones, joints, and connective tissue (tendons and ligaments). The ankles and knees are particularly susceptible to injury.Learn more about bodily injury at
https://brainly.com/question/4401423
#SPJ4
Which type of lens produces diverging rays?
A) Concave Lens
B) Convex Lens
C) Concave Mirror
D) Flat Mirror
Answer:
The fact that a double concave lens is thinner across its middle is an indicator that it will diverge rays of light that travel parallel to its principal axis. A double concave lens is a diverging lens.
consider a converging lens whose focal length is 5.97 cm. an object is placed on the axis of the lens at a distance of 12.9 cm from the lens. how far is the object's image from the lens?
The object's image is formed at a distance of 3.81 cm from the lens.
According to the thin lens formula, 1/f = 1/do + 1/di, where f is the focal length, do is the object distance and di is the image distance. Substituting the given values, we get:
1/5.97 = 1/12.9 + 1/di
Solving for di, we get:
di = 1/((1/5.97) - (1/12.9))
di = 3.81 cm
Therefore, the object's image is formed at a distance of 3.81 cm from the lens. It is a real image since the image distance is positive. The magnification of the image can be found using the formula M = -di/do, where M is the magnification. Substituting the values, we get:
M = -(3.81/12.9)
M = -0.295
This means that the image formed is smaller than the object and inverted. The negative sign indicates that the image is inverted.
Learn more about focal length here,
https://brainly.com/question/15744335
#SPJ11
a 1000 kg car is capable of accelerating from 0 to 100 meter/second in 10 seconds. among the following choices, which is the lowest possible power rating of the car’s engine?
The lowest possible power rating of the car's engine. In this case, the power is found to be 500,000 watts or 500 kW
The lowest possible power rating of the car's engine can be calculated by using the formula: Power = (1/2) * Mass * Velocity^2 / Time.
Power is the rate at which work is done or energy is transferred, and it can be calculated using the formula: Power = Work / Time. In this case, the work done is equivalent to the change in kinetic energy of the car, which can be calculated using the formula: Work = (1/2) * Mass * Velocity^2.
Given:
Mass of the car (m) = 1000 kg
Final velocity (v) = 100 m/s
Time taken (t) = 10 s
Substituting the values into the formula, we get:
Power = (1/2) * Mass * Velocity^2 / Time
= (1/2) * 1000 kg * (100 m/s)^2 / 10 s
= 500,000 W
Therefore, the lowest possible power rating of the car's engine is 500,000 watts, or 500 kW.
By using the formula for power and substituting the given values, we can calculate the lowest possible power rating of the car's engine. In this case, the power is found to be 500,000 watts or 500 kW. This indicates the minimum power required for the car's engine to accelerate the car from 0 to 100 m/s in 10 seconds.
To know more about kinetic energy visit:
https://brainly.com/question/8101588
#SPJ11
Hypochondriacs seek out medical care in order to verify that they do not have an illness.
Please select the best answer from the choices provided
T
F
Answer:
False
Explanation:
Just took the test
False, because hypochondriacs think they have a significant, undetected medical ailment even when testing reveal they are healthy.
Who are hypochondriacs?A hypochondriac is someone who, despite diagnostic testing showing they have no health issues, lives in constant anxiety that they have a terrible, undetected medical illness. They are obsessed with the concept that they suffer from a major illness that has gone untreated.
In adults, hypochondriasis often begins to manifest. Among the symptoms are a persistent, strong anxiety of developing a major illness and concern that seemingly little symptoms portend a larger problem. A patient may change physicians or see them regularly.
Medication and counselling could be helpful.
Learn more about hypochondriac, here:
https://brainly.com/question/11046677
#SPJ5
Water boiling
Which one is shown? (Look at pic)
Answer:
conduction.
Explanation:
Hoped I helped! Im Eve btw have a great day and consider marking this brainliest if you do thank you in advanced!
Two dimensional motion
Answer:
In two-dimensional projectile motion, such as that of a football or other thrown object, there is both a vertical and a horizontal component to the motion. ... The key to analyzing two-dimensional projectile motion is to break it into two motions, one along the horizontal axis and the other along the vertical.
Answer:
In two-dimensional projectile motion, such as that of a football or other thrown object, there is both a vertical and a horizontal component to the motion. ... The key to analyzing two-dimensional projectile motion is to break it into two motions, one along the horizontal axis and the other along the vertical.
what is 2 plus 2 and 1 plus 1
Answer: 6
Explanation:
Have an awesome amazing day
Answer:
2 plus 2 = 4 AND 1 plus 1 = 2
Explanation:
I guess combine both equations if your detailed instructions allow.
What is the maximum instantaneous power dissipated by a 2.5 −hp pump connected to a 240−Vrms ac power source?
What is the maximum current passing through the pump?
The maximum current passing through the pump is approximately 11 amperes.
To find the maximum instantaneous power dissipated by a 2.5-hp pump connected to a 240-Vrms AC power source, follow these steps:
1. Convert the horsepower (hp) to watts (W): 1 hp is equal to 746 watts, so 2.5 hp × 746 W/hp = 1865 W.
2. Determine the maximum power: For an AC power source, the maximum power is √2 times the RMS power. So, the maximum power = 1865 W × √2 ≈ 2637.4 W.
The maximum instantaneous power dissipated by the pump is approximately 2637.4 watts.
To find the maximum current passing through the pump:
1. Use the formula: Power (P) = Voltage (V) × Current (I).
2. Rearrange the formula to solve for current: I = P / V.
3. Calculate the maximum current: I = 2637.4 W / 240 V ≈ 11 A.
You can learn more about instantaneous power at: brainly.com/question/17770562
#SPJ11
List the 3 formulas for Speed, Distance, and Time
The is greater for low-mass stars than it is for high-mass stars. 2. The stars known as are the very largest and brightest of all the stars. 3. Most of the stars near the Sun are . 4. Stars are classified on the basis of their spectral type and 5. Cepheids are examples of . 6. are no longer generating energy through nuclear fusion. 7. Stars that are cooler than the Sun yet 100 to 1,000 times as luminous as the Sun are classified as .
Answer:
red giant stars/ red hyper giants
Explanation:
take stephenson 2-18 for example the star is only 3200k where the sun is around 5000k.
Identify one similarity between fission and fusion
Answer:
Both fission and fusion release large amounts of energy.
Explanation:
One or more atoms of a different weight to the reactant atom is formed in both fission and fusion reactions. There is a change in weight between the reactant (s) and product (s) in both fission and fusion reactions.
can you help me with this puzzle with a decoder ring
BDONC,ZVP has to be all lower case
solve today's free puzzle, you will need your Morse Code Decoder Ring from last week. This puzzle is a list of words that are related in some way. Can you decode them all and figure out their relationship?
This puzzle would be great for kids 8 and older. If you need help constructing the decoder, click here.
post signature
The Puzzle Den at 11:31 AM
Share
No comments:
comets tend to be ________ than asteroids, and it is estimated that there are far ___________ large comets than large asteroids.A. Crust and MantleB. Faster and MoreC. Hydrogen and HeliumD. Change in climate and core
"Comets tend to be faster than asteroids, and it is estimated that there are far more large comets than large asteroids." Correct option is B.
As comets typically originate from farther out than asteroids do, they move at faster speeds when they cross Earth's orbit: An asteroid would need to be larger than 10 kilometres in diameter, whereas a comet would only need to be about 7 kilometres in diameter to hit Earth with enough energy to form Chicxulub crater.
Two factors that differentiate a comet from an asteroid are shape of the orbit and chemical composition.
There are asteroids that are spherical, curved, and even have satellites. A comet circles the Sun similarly to an asteroid, but unlike an asteroid, it is made of ice and dust. Therefore, a comet's ice and dust composition begin to vaporise as it approaches the Sun. Consequently, a comet looks fuzzy and/or has a tail when viewed through a telescope.
To know more about asteroids:
https://brainly.com/question/1939309
#SPJ4
Define electroplating
Answer:
La galvanoplastia o electrodeposición es una aplicación práctica de la electroquímica. Se trata de una técnica basada en los principios electroquímicos, en donde se aplica una o varias capas de un metal seleccionado sobre un objeto receptor, por lo general, también metálico.
Explanation:
Espero te sirva de algo ;)
one end of a 1.0-m long string is fixed, the other end is attached to a 2.0-kg stone. the stone swings in a vertical circle, passing the top point at 4.0 m/s. the tension force of the string (in newtons) at this point is about?
T = 51.6 N. At this point, the string's tension force (measured in newtons) is about vertical and passes the bottom point.
What is the string's tension?A rope or rope is frequently pictured as having only one dimension, being massless, and having no cross section. The tension along the string is a constant and is equal to the strength of the forces exerted by the string's ends if there are no bend in the string, as there can be with vibrations or pulleys.
Explanation:Since we are aware that the bottom location of a horizontal circular motion is where there is the greatest strain;
T − Mg = F-c = Mv²/r
Where F-c is centripetal force
Since T − Mg = Mv²/r
Let's make T the subject;
T = Mg + Mv²/r
Where g is the acceleration caused by gravity, which is 9.8 m/s2, T is the tension of the rope, M is the mass of the stone, v is its speed, and r is its length.
Considering the query,
M = 2Kg
v = 4 m/s
r = 1m
By entering the pertinent values, we may obtain T;
T = M(g + v²/r) = 2(9.8 + 4²/1)
T = 2(9.8 + 16)
T = 51.6N
To know more about String's tension visit:
https://brainly.com/question/13397436
#SPJ4
A child's toy gun is a spring-loaded launcher for small lightweight balls of mass 15.0 g. When it is loaded and ready, the spring is compressed by 5.00 cm. The spring constant is 250 N/m. Assume no air resistance or friction.
A) What is the initial velocity of the ball, as it leaves the gun (the muzzle velocity) if the toy gun is fired horizontally? Give your answer in m/s.
B) If the toy gun is fired straight up, how high will the ball go as measured from the end of the spring gun? Give the distance in meters.
(A) The initial velocity of the ball as it leaves the gun (muzzle velocity) when fired horizontally is approximately 0.79 m/s. (B) The ball will reach a maximum height of approximately 0.021 meters when the toy gun is fired straight up, measured from the end of the spring gun.
A) To find the initial velocity of the ball as it leaves the gun (muzzle velocity) when fired horizontally, we can use the principle of conservation of mechanical energy.
Given:
Mass of the ball (m) = 15.0 g = 0.015 kg
Spring constant (k) = 250 N/m
Compression of the spring (x) = 5.00 cm = 0.05 m
Step 1: Calculate the potential energy stored in the compressed spring.
Potential energy (PE) = (1/2) × k × x²
PE = (1/2) × 250 N/m × (0.05 m)²
Step 2: Calculate the kinetic energy of the ball when it leaves the gun.
Since no energy is lost due to air resistance or friction, the potential energy stored in the compressed spring will be converted entirely into kinetic energy.
Kinetic energy (KE) = PE
KE = (1/2) × m ×v², where v is the muzzle velocity
Step 3: Solve for the muzzle velocity (v).
(1/2) × m × v² = (1/2) × 250 N/m × (0.05 m)²
v² = (250 N/m × (0.05 m))² / m
v² = 0.625 m²/s²
v ≈ √(0.625) m/s
v ≈ 0.79 m/s
Therefore, the initial velocity of the ball as it leaves the gun (muzzle velocity) when fired horizontally is approximately 0.79 m/s.
B) If the toy gun is fired straight up, we can use the principle of conservation of mechanical energy to find the maximum height the ball reaches.
Step 1: Calculate the potential energy stored in the compressed spring (same as in part A).
Potential energy (PE) = (1/2) × k × x²
PE = (1/2) × 250 N/m × (0.05 m)²
Step 2: Calculate the maximum height reached by the ball.
At the maximum height, all the potential energy is converted into gravitational potential energy.
Gravitational potential energy (PE gravity) = m × g × h, where h is the maximum height
PE gravity = (1/2) × k × x²
m × g × h = (1/2) × k × x²
h = [(1/2) × k × x²] / (m × g)
Substituting the given values:
h = [(1/2) × 250 N/m × (0.05 m)²] / (0.015 kg × 9.8 m/s²)
h ≈ 0.021 m
Therefore, the ball will reach a maximum height of approximately 0.021 meters when the toy gun is fired straight up, measured from the end of the spring gun.
To know more about potential energy:
https://brainly.com/question/32775562
#SPJ4
water in a cylinder of height 10 ft and radius 2 ft is to be pumped out. the density of water is 62.4 lb/ft . find the work required if (a) the tank is full of water and the water is to be pumped over the top of the tank. work
The work required to pump out a full cylinder of water with a height of 10 ft and radius of 2 ft over the top of the tank is 62,400 ft-lb.
To find the work required, we first need to calculate the volume of the cylinder, which can be done using the formula V = πr²h, where V is the volume, r is the radius, and h is the height.
In this case, V = π(2 ft)²(10 ft) = 40π ft³.
Next, we find the weight of the water in the cylinder by multiplying the volume by the density (62.4 lb/ft³).
The weight of the water is W = (40π ft³)(62.4 lb/ft³) = 2,496π lb.
Finally, we find the work required to pump out the water by multiplying the weight of the water by the height it must be pumped (10 ft).
The work required is: Work = (2,496π lb)(10 ft) = 24,960π ft-lb ≈ 62,400 ft-lb.
Summary: To pump out a full cylinder of water with a height of 10 ft and radius of 2 ft over the top of the tank, 62,400 ft-lb of work is required.
Learn more about volume click here:
https://brainly.com/question/463363
#SPJ11