The same roller coaster car reaches the bottom of the track, 0 m from the ground. if no mechanical energy was lost to friction, what is the car kinetic energy?

A rear window defroster consists of a long, flat wire bonded to the inside surface of the window. When current passes through the wire, it heats up and melts ice and snow on the window. For one window the wire has a total length of 12.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours?

Magnetic field are similar to electrical fields

Suppose you have a 113-kg wooden crate resting on a wood floor. (μk = 0.3 and μs = 0.5). What maximum force (in N) can you exert horizontally on the crate without moving it?

When a new bond forms in a chemical reaction, what happens? A. Energy is released. B. An atom loses its protons. C. Neutrons in the nucleus expand. D. The products get larger.

What force causes warm molten rock to move upward in the mantle? a. Convection c. Refraction b. Radiation d. Conduction

When are magnets attracted and when are they repelled.

Dura mater location?

El Nino begins with which of the following? -upwelling of cold ocean water -the westward movement of winds and currents in the pacific -heavy mudslides in california and tornadoes in florida -the eastward movement of winds and currents in the

How does Rutherford's model of the atom compare with Thomson's model? A.) They both describe atoms as small, indivisible spheres. B.) They both describe electrons as moving around the nucleus. C.