If a 10 kg ball is sitting on a 5 meter high ledge, what is it's potential energy? (g= 9.8 m/s2)

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

What are the three ways that an object can accelerate

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)