Heat is best defined as
a. friction.
b. temperature.
c. the flow of matter from one point to another.
d. energy in the motion or vibration of molecules in a substance. user: the first step in making electricity from a nuclear reaction is -
a. making steam.
b. spinning a turbine.
c. putting uranium in a reactor.
d. generating electrical current in a generator.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?