About how long does it take for sound to travel 1 Km?

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

In what direction does an object move when affected by an unbalanced force? Large force = ... Small force= Large Mass = ... Small Mass=

A medical cyclotron used in the production of medical isotopes accelerates protons to 6.5 MeV. The magnetic field in the cyclotron is 1.9 T.

A piece of candy has 5 calories (or 5000 calories). if it could be burned, leaving nothing but carbon dioxide and water, how much heat would it give off?

An example of an action and reaction is sitting on a chair. Your body pushes down on the chair because of the force of _, and the chair pushes up on your body with equal force.

True or False? a globular cluster is a group of older stars that are clustered together.

The doppler effect is the change in observed frequency due to

Which of the following is NOT a vector quantity? (A) Acceleration (B) Average velocity (C) Linear momentum (D) Potential energy (E) Force

Which of Newton's laws of motion is demonstrated by a hammer pounding a nail into a board

Heated air molecules in a hot air balloon soon carried thermal energy to the top of the balloon. this is an example of ... conduction. Convection. Radiation. Cooling.