Real world situation to explain the relationship between work and power

Answers

Answer 1

Answer: -- You and your partner both get the same job to do:

Each of you gets a pallet of bricks, and you have to
put the bricks up on the bed of a truck, by hand.
Both pallets have the same number of bricks.

The pallet is way too heavy to lift, so you both cut the bands
that hold the bricks, and you lift the bricks from the pallet onto
the truck, by hand, two or three or four bricks at a time.

-- You get your pallet of bricks onto the truck in 45 minutes.

-- Your partner gets his pallet of bricks onto the truck in 3 days.

-- Work = (force) times (distance).

    You and your partner both lifted the same amount of weight
   up to the same height. You both did the same amount of work.

-- Power = (work done) divided by (time it takes to do the work) .

   Your partner took roughly 96 times as long as you took
   to do the same amount of work.
   You did it faster. He did it slower.
   You produced more power. He produced less power.

Related Questions

What makes dark energy "dark"?A. its unknown nature B. its completely black color C. its existence beyond the visible spectrum D. its inevitable creation of a totally destructive Big Crunch Nucleosynthesis began when _____ and ended when _____. A. the Big Bang occurred; the Big Crunch occurred B. nuclear reactions could first occur; matter had condensed into galaxies and stars C. the cosmic microwave background radiation formed; dark energy replaced it as the dominant energy form D. the universe had cooled enough for atoms to combine; protons and neutrons were too far apart to form nuclei
An electron released by a radioactive nucleus that causes a neutron to change into a proton is called
The angle between the two vectors A=3i^+4j^+5k^ and B=3i^+4j^−5k^ will be: a. 90 degree b. 0 degree . 60 degree d. 30 degree
You are on roller blades on top of a small hill. Your potential energy is equal to 1,000.0 joules. The last time you checked your mass was 60.0 kilograms. a. What is your weight in newtons? b. What is the height of the hill? c. If you start skating down this hill, your potential energy will be converted to kinetic energy. At the bottom of the hill, your kinetic energy will be equal to your potential energy at the top. What will be your speed at the bottom of the hill?
What is a major goal of the federal government when managing land resources?

What kind of energy do most electric inventions give off?

Answers

Answer:

Electricity?

Explanation:

What type of energy is released when fossil fuels are burned?

Answers

Before the fuel is burned, it's chock full of chemical energy. When the fuel is burned, the chemical energy is released, and it escapes in the form of heat and light energy.

Answer:

¨chemical energy¨ is released.

an electron is held at a distance from a stationary, positively charged object . If the electron is released , what energy change will take place?

Answers

Answer:

Electrostatic potential energy will convert into kinetic energy

Explanation:

When electron is released from rest at some distance from positive charge then due to electrostatic attraction force these two charges will attract each other.

Now in the form of energy we can say that

electrostatic potential energy = $(kq_1q_2)/(r)$

now as the two charges comes closer to each other then the electrostatic potential energy will decrease and hence this energy will convert into kinetic energy of two charges

so we can say

$(kq_1q_2)/(r_2) - (kq_1q_2)/(r_1) = (1)/(2)mv^2$

Electric potential energy will be transformed into kinetic energy.

The focal length is the distance from the midline of the lens to the _____.image
object
focal point
2F position

Answers

The focal length is the distance from the mid-line of the lens to the Focal Point.

Focal point lies at a distance which is half the radius of curvature of the lens. hence focal length is also given by the formula

f = R/2

where f = focal length

R = radius of the focal length

hence the correct choice is focal point.

Answer:

FOCAL POINT

Explanation:

JUST TOOK TEST

Which of the following states that absolute zero cannot be reached?A. the second law of thermodynamics
B. the first law of thermodynamics
C. the second and third laws of thermodynamics
D. the third law of thermodynamics

Answers

The second and third laws of thermodynamics states that absolute zero cannot be reached. The correct option among all the options that are given in the question is the third option or option "C". Both the laws actually deal with the relations that exist between heat and other forms of energy. I hope the answer helps you.

Answer:

D. the third law of thermodynamics

Explanation:

As per third law of thermodynamics we know that entropy of a perfect crystal comes to zero when the temperature of the crystal reaches to absolute zero.

So as per the theory of entropy we know that entropy of a system cannot be zero as it will reach zero then system will not exist.

So here we can say that

As per third law it is not possible to achieve zero kelvin or absolute zero temperature because at that temperature the entropy will become zero and then the system will not exist in that case.

So here we can say the correct answer will be

D. the third law of thermodynamics

A car traveling at 37 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds.what is its acceleration? m/s

Answers

Magnitude of acceleration = (change in speed) / (time for the change)

= (end speed - start speed) / (time for the change)

= (0 - 37 m/s) / (6 sec)

= ( - 37 / 6) (m/s²)

= - 6-1/6 m/s²

= -6.1667 m/s² (rounded)

Other Questions

How do I calculate the equivalent resistance?

A 15-kg bicycle carrying a 50-kg boy is traveling at a speed of 5 m/s. What is the KE of the bicycle and the boy?

How should you test a hypothesis?