3. A roller coaster car sits at rest at the top of a hill, 23.5 meters tall. What will be the final

velocity of the car at the bottom of the hill?

A fisherman noticed that a float makes 30 oscillations in 15 seconds. The distance between two consecutive crests is 2 m. What is the period and frequency of the wave? What is the wave speed?

Explain why is not advisable to use small values of I in performing an experiment on refraction through a glass prism?

A scientific law is?

Choose the best definition for velocity 1. How fast something is going 2. Speed in a certain direction 3. Which direction something is going 4. Something speeding up

How does the process of convection within the earth drive the creation of various earth features?

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?

Which is an example of a transverse wave? A. sound B. electromagnetic C. water D. seismic waves