An aluminum Bar of length 0.5 is heated from room temperature (22 C) to 127. How much longer is the bar?
Alpha = 25 x 10-6

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

An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.

Why does a collision with an airbag cause less damage than a collision with a steering wheel