The direction of the current in an alternating current circuit

remains constant.

is direct.

changes repeatedly.

changes randomly.

What does the concept of density mean?

Is a marble rolling across the table kinetic energy

Amy counts the wave crests traveling down a stretched string. Five wave crests pass Amy in two seconds. What is the frequency of the wave? A. 5.0 Hz B. 2.5 Hz C. 10 Hz D. 2.0 Hz

Each of three identical 15.0-L gas cylinders contains 7.50 mol of gas at 295 K. Cylinder A contains He, cylinder B contains O2, and cylinder C contains SO2. According to the kinetic molecular theory, which gas has the highest average speed?

When humans look at the sky, it appears blue, but the Sun appears yellow. What causes this phenomenon? A. The atmosphere creates blue light and the Sun creates yellow light. B. The atmosphere absorbs yellow light more than blue light. C.

Is the muzzle velocity a scalar or vector quantity?

How many day does it take the sun to came out?

Using the word "more" to mean "I want another cookie" is an example of a (n) :

Ohm's law is I = V : R. What is the current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance? The current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance is (blank) amps.

Why do marine west coast climates have much precipitation