If the astronaut has only a 10 minute air supply left, how fast must she throw the wrench so that she makes it back to the spaceship in time?17m/s

Identify the type of synthetic material used in each object

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?

Are good conductors of heat also good conductors of electricity? explain your answer.