How much must an object weigh to be able to float in water? 1: more than the amount of water it displaces
2: less than the amount of water it displaces
3: more than a gram
4: less than a gram

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 describes increasing the efficiency of energy resource

You can melt ice by applying pressure because the solid/liquid line has a slope.