The skater is has a mass of 75 kg. Find the total Potential energy of the skater at the top of the ramp at 6 m.

An element can be identified by its spectrum

If a piece of iron is placed in pure nitrogen, nothing happens. If the in is exposed to air, it begins to rust. What conclusion can you make about air, based on this observation?

Whats more difficult to compress oxygen water brick or salt water

What is the resistance of a 1500 w (120 v) hair dryer? b. what is the current in the hair dryer when it is used?

10) A bowling ball released from rest at the top of a 200. m building falls to the ground under the influ- ence of gravity. Calculate: a) its speed at 5.00 s b) how far it has gone when its speed is 32.0"

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching

Why are glass fibers stronger than bulk glass?