What is magnetism caused by?

A. the motion of protons

B. the motion of electrons

C. the attraction between protons and electrons

D. the interaction between neutrons and protons

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C.

9 volt battery is connected to three 20 Ohm resistors in series. What is the total resistance of the load and current through each?

Floating space rock too small to be considered a planet

Which one of the following environments will sound not travel through? A. Vacuum B. Gas C. Solid D. Liquid

Refracted light rays ... A - are bent as they pass into a different medium B - are absorbed by an object C - are reflected from an object at a variety of angles D - bounce off a medium

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.