Which is the best example of refraction

Which form of energy does a battery-powered flashlight receive as an input? A. chemical potential energy B. radiant energy C. solar energy D. thermal energy

if a coin and a piece of paper are dropped simultaneously from the same height which of two will touch the ground first? what will happen if they are dropped together in vacuum

A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over the next 4.0 seconds. Assume that the angular acceleration is constant.

What element group is known as salt formers

If you were trying to design the most efficient fission reactor possible, what ratio of U-235 to U-238 would you want? Explain why.

Stephen can push with 200N of force on a couch. If the couch has a mass of 20 kg, how much acceleration will the couch have?

Which devices might use electromagnets? pick all that apply. 1. audio speakers 2. plastic combs 3. trains 4. doorbells 5. revolving chairs 6. cranes

Match each type of line or symbol, common to geologic maps, to its description. 1. Fault Line A. very dark and thick line 2. Contact Line B. very light and thin line 3. Axis Fold C. look like a stubby T 4. Strike and Dip D.

You drop your backpack out of a window from a height of 8.3 m. What is the impact speed of your backpack? A. 163 m/s B. 1.2 m/s C. 21.3 m/s D. 12.8 m/s

What is the kinetic energy of a car that has a mass of 1,600 kg and is moving at 22 m/s?