Which of the following materials allows charges to flow easily?

A. wood

B. an electrical conductor

C. glass

D. an electrical insulator

Which electromagnetic wave transfers the least amount of energy? gamma X-ray ultraviolet microwave

A drag racer, starting from rest, travels 6.0 m in 1.0 s. Suppose the car continues this acceleration for an additional 4.0 s.

What is the energy stored in the 10.5 μ F 10.5 μF capacitor of a heart defibrillator charged to 8250 V?

What can you assume has happened if an electron moves to a higher energy level? A) the atom has become more stable B) the electron has lost energy C) the electron has gain energy D) the atom has lost an electron

The factors that affects the gravitational force between two objects are

given that a car's distance from a stop sign t seconds since it started moving is represented by d=t2-2t determine the car's average speed over each interval of elapsed time

A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? OA. The ball experiences more force than the wall. OB. The ball experiences less force than the wall.

A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away from the base of the waterfall?

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.