What is a cosmic microwave background

Mechanical energy is the sum total of all the kinetic energy and energy in a system. thermal chemical potential electrical

Stored energy due to the interactions between objects

If a radioactive material has 1 hour half life, how much of a 1000 g sample will be left after 6 hours

Two asteroids of equal mass in the asteroid belt between mars and jupiter collide with a glancing blow. asteroid a, which was initially traveling at va1 = 40.0 m/s with respect to an inertial frame in which asteroid b was at rest, is deflected 30.

Which has more momentum, and why: a fly moving at top speed or a truck parked in a parking lot.

If the car went 30 km west in 25 min. and then 40 km east in 35 min., what would be its total displacement?

Which of the following is not the name of a space station that was in orbit around Earth?

Relationship between acceleration and free fall

A SI unit used to measure force, equal to less than one-quarter of a pound, is the what

What basic form of energy is present in blowing wind?