Which is a part of a vacuum?

a) inclined plane

b) block and tackle

c) wedge

d) lever

Which of the following elements are non-reactive because their outer electron energy levels are full? A. Aluminum B. Carbon C. Krypton D. Uranium

The density is 1.5 g/cm^3. the mass is 1500. what is the volume

A bike travels 15.0 km in 45.0 min. Its average speed in km/h is.

Your car burns gasoline with air to make heat where does most of this energy come from

Calculate the power provided by a 12-volt car battery with a rating of 350 amperes.

The metric system and metric conversions are?

Ron bicycles forward with an acceleration of 2.1 m/s2. If he is applying a forward force of 195 N, what is his mass?

Diane swim 5 kilometers against the current in the same amout of time it took her to swim 15 kilometers with the current. The rate of the current was 2 kilometers per hour. How fast would diane swim if there were no current?

A man paddles a canoe in a long, straight section of a river. The canoe moves downstream with constant speed 5 m/s relative to the water. The river has a steady current of 1 m/s relative to the bank. The man's hat falls into the river.

In an atom, almost all of the mass is concentrated in a tiny nucleus because