Which of the following best describes alternating current? current that increases and decreases in temperature current that constantly turns on and off current in which charges change direction current that gains and loses electrons

You are given two capacitor c1 and c2 in which c1> c2 how could things be arranged so that c2 could hold more charge than c1

What's a real life example of relative motion?

During which of the following months is the sun likely to illuminate Earth equally from pole to pole? December January June September

An object moving on a horizontal, frictionless surface makes a glancing collision with another object initially at rest on the surface. In this case, which of the following is true about momentum and kinetic energy? a.

What happens along a stationary front? a. Cold air rises over warm air. b. The flow of air is neither toward the warm air mass nor toward the cold air mass. c. Air moves so rapidly upward that hurricanes form. d. Wind stops completely.

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons

Gamma radiation can be significantly reduced by ... A sheet of paper Air A 3 mm thickness of aluminium Several cm of lead

Why is it possible to remove a paper without moving the object on it. (apply newton's law)

If you had a trapped gas and continued to cool it until the lowest possible temperature is reached the temperature is called

Which layer of the atmosphere has the air we breathe?