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3 years ago

The work accomplished (produced) by a machine is called Work _____

Physics

1 answer:

Nonamiya [84]3 years ago

6 0

I think it’s output because output work is work done by a machine

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Which of the following is a theory stating that one plate is forced beneath another plate?

morpeh [17]

Answer:

theroy of plate tectonics

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3 years ago

A fireman of 80 kg slides down a pole.When he reaches the bottom, 4.2 m below his starting point, his speed is 2.2 m/s . By how

levacccp [35]

Answer:

3099 J

Explanation:

The increase in thermal energy corresponds to the mechanical energy lost in the process.

The mechanical energy is given by the sum of gravitational potential energy and kinetic energy of the fireman:

$E=K+U$

At the top of the pole, the fireman has no kinetic energy, so all his mechanical energy is just potential energy:

$E=U=mgh=(80 kg)(9.8 m/s^2)(4.2 m)=3293 J$

When the fireman reaches the bottom, he has no gravitational potential energy, so his mechanical energy is just given by his kinetic energy:

$E=K=\frac{1}{2}mv^2=\frac{1}{2}(80 kg)(2.2 m/s)^2=194 J$

So, the loss in mechanical energy was

$\Delta E=3293 J-194 J=3099 J$

and this corresponds to the increase in thermal energy.

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3 years ago

Explain how gravity and inertia interact to cause the Earth to revolve around the Sun.

eduard

Answer:

The gravity of the sun and the planets works together with the inertia to create the orbits and keep them consistent. The gravity pulls the sun and the planets together, while keeping them apart. The inertia provides the tendency to maintain speed and keep moving. The planets want to keep moving in a straight line because of the physics of inertia. However, the gravitational pull wants to change the motion to pull the planets into the core of the sun. Together, this creates a rounded orbit as a form of compromise between the two forces.

Explanation:

Hope this answer helps you....

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4 years ago

Is Particle B charged or uncharged? If charged, indicate whether it is charged positively or negatively. (n = neutron, p = proto

diamong [38]

Answer:

community College program and maddie d

Explanation:

work business work and maddie

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3 years ago

How long does it take (in seconds) a 80,000 W motor to do 3,000,000 J of work?

postnew [5]

P=W/t
t=W/P
t=3,000,000 / 80,000
t= 37.5 second

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3 years ago