What is heat?

A. A measure of the movement of molecules inside an object

B. The transfer of energy from a hot object to a cold object

C. The force exerted on an area by an object

D. A measure of mass per unit volume of an object

A steel ball of mass 0.500 kg is fastened to a cord that is 70.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.

Inside a stereo speaker, you will find two permanent magnets: one on the cone and one near the cone. True of false?

Identify the method of thermal energy transfer.

Ld above the ground has potential energy. as the rock falls, this potential energy is converted to kinetic energy. finally, the rock hits the ground and stays there. what has happened to the energy?

A person pushing a stroller starts from rest, uniformly accelerating at a rate of 0.500m/s^2. What is the velocity of the stroller after it has traveled for 7 seconds

The amplitude of a sound is the Group of answer choices frequency of the sound. magnitude of displacement of a sound pressure wave. psychological aspect of sound related to timbre. amount of sound energy falling on a unit area.

Air at 38°C and 97% relative humidity is to be cooled to 18°C and fed into a plant area at a rate of 510 m/min. a. Calculate the rate (kg/min) at which water condenses. b.

a 7.26kg bowling ball (16 pounds) is at rest at the end of the bowling lane. : how long did you push the ball in this situation

Which is an example of speed? Cindy biked westward at 30 km/h. A rock is to the left of a flowerpot. A dog runs an average of 8 mph. Leo lives 2 miles north of Andre.

You need to design a capacitor capable of storing 3.0 10-7 c of charge. at your disposal, you have a 100 v power supply and two metal plates, each of area 0.490 m2 each. what is the limit of the separation of the plates? mm