Which is the route of minimum displacement for astronaut B from his current location, back to the spacecraft to pick up the hammer?

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

Anybody wanna ? (picture included? )