A man performed 500 j of work moving a couch in his living room. It took him 10 seconds to move the couch. What was his power?

100w

5000w

490w

50w

What percentage of the earth's surface is covered in water

If you hold a rubber band loosely between two fingers and let it rest against your lips, and then stretch the rubber band, the sensitive skin of your lips will detect a small temperature increase.

A tow truck exerts a force of 3000 n on a car, accelerating it at 2 meters per second per second. what is the mass of the car?

Why does a nylon dress sticks on the body and crackles when removed

Select the correct answer. Which category of materials does concrete belong to and why? A. It's a synthetic polymer because it's a product of a chemical reaction. B. It's an alloy because it contains layers of different components. C.

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)

What is the weight of a 15kg dog on earth?

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.

Explain what each of the following scientists contribute to the atomic theory