If your friend has a mass of 70 kg and you have a mass of 50 kg and are required to sit 2m away from each other, what is the
gravitational force between you?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)