points A and B are nearby a proton in otherwise empty space. The potential is chosen to be zero very far away from the proton. The potential at A is half as much as the potential at B. Compared to the electric field energy density at B, the electric field energy density at A is __

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

c. newton's third law of motion

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )