What has to be different to allow refraction to occur?

a. the medium

b. the light

c. the wave

d. the speed

The law of equal areas indicates that planets travel when they are closer to the Sun, and when they are farther out from the Sun.

An atom can act as a tiny magnet due to the spinning motion of charged particles called neutrons. true or false?

Which of the following BEST describes sports etiquette?

To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length of 1 600 m.

A circuit has a voltage drop of 120 V across an 80 resistor that carries a current of 0.75 A. How much power is used by the resistor? Use P = VI. A. 90 W B. 60 W C. 9600 W D. 2 W

What characteristic of a planet determines the acceleration due to gravity on it?

Which set of terms best defines what affects kinetic energy and potential energy, respectively? position, gravity gravity, position velocity, height height, velocity

You are operating a powerboat at night. You see green and white lights on another boat. What should you do?

How does Newton's second law apply to an "Egg Drop" experiment?

A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common final speed is: