Is your textbook the kind of idealized object (described in section on radiation laws) that absorbs all the radiation falling on it? explain. how about the black sweater worn by one of your classmates?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?