Which of the following materials is an insulator against electric current?

A. A silver spoon

B. Aluminum foil

C. A copper penny

D. A glass pane

Your mass in kilograms if you weight 170 pounds

Why does light not break the sound barrier?

As the temperature of the gas in a balloon decreases which occurs after

If I double the force acting on an object, how will this affect the acceleration of the object?

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

A soccer ball is sitting in the middle of a soccer field during a game. When the referee blows his whistle, one of the players runs toward the ball and kicks it as hard as he can.

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?