Inside a space shuttle there are two identical boxes, but different content: one containts metal tools and the other foam for insulation. how can the astronaut know which is the one with the tools without opening it?

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply