A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it contain?

A 82.1 kg person stands on a scale. what normal force does the scale exert on him? (Unit = N)

How does WiFi actually work?

In nuclear fission mass is transformed into

The Coriolis effect is the result of which of these? A.) The rotation of Earth on its axis B.) The different air movements north and south of the equator C.) The friction that slows down winds near Earth's surface D.) Winds spinning off the equator

In western states, many homes generate electricity from windmills. in a particular home, a young boy is using electricity to run a toy electric train. name 2 transformations.

A farmer had 15 sheep, and all but 8 died. How many are left?

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds. If the boy and the scooter together have a mass of 30 kg, what is their final velocity? a. 2.

3. A 120.0 V generator supplies 3.0 kw of power. How much current ca the generator deliver?

An apple drops from a tree and hits the ground in 1.5s what is its speed just before it hits the ground?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?