The temperature measured outside the International Space Station is 2.7 Kelvin. How is it possible for empty space to have a temperature?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

How does the entropy of steam compare to the entropy of ice?

It takes a lot of energy to get the temperature of water to increase and eventually boil because water has a high heat.