What evidence did Alfred Wegener use to support his theory of continental drift?

Are mass and Force of Gravity directly proportional and why?

A penny is placed on a rotating turntable. Where on the turntable does the penny require the largest centripetal force to remain in place? Give your reasoning.

The student throws one cannonball directly upward at 5.0 m/s and simultaneously throws the other cannonball directly downward at 5.0 m/s. (this requires great dexterity, but the student has been practicing this maneuver for several months.

In a remote location near the North Pole, an iceberg floats in a lake. Next to the lake (assume it is not frozen) sits a comparably sized glacier sitting on land.

My investigation: Careers in Energy Assignment: My Research Plan

A student throws a 5.0-newton ball straight up. What is the net force on the ball at its maximum height? (1) 0.0 N (3) 5.0 N, down (2) 5.0 N, up (4) 9.8 N, down

An object starts from rest and falls freely for 40. meters near the surface of planet P. If the time of fall is 4.0 seconds, what is the magnitude of the acceleration due to gravity on planet P?

Consider two metallic rods mounted on insulated supports. One is neutral, another positively charged. The charged rod is brought close to the neutral one (no touching!

Which term identifies the dark smooth areas on the surface of the moon? craters terrae maria regolith

1. work is a transfer of 2. a small 20-killogram canoe is floating downriver at a speed of 2 m/s. what is the caanoes kinetic energy?