The region where warm and cold air masses meet

What is the potential energy of a 2,000-kg car parked at the top of a 30-m hill?

If it's a full moon how much of the moon are you actually seeing?

The steam engine in a train heats water until it becomes steam. The steam pushes pistons to move the train. The train is changing a. kinetic energy b. heat c. chemical energy into a. mechanical energy b. potential energy c. electricity?

A horizontal force of 24 N is being applied to a box on a level surface. The box is accelerating at the rate of 2.0 against a frictional force of 14 N. What is the mass of the box?

Most of an atom is empty space. a. True b. False

What relates the net force exerted on an object to its mass and acceleration?

I'm a wave, the medium moves parallel to the direction that the wave travels

What is the wavelength of a wave that has a velocity of 32 m/s and a frequency of 60.6 Hz?

Two objects repel each other with a force of 8N. if

Mike walked 450 m west. He then turned and walked 150 m to the east in 300 seconds. what was his velocity?