Calculate the weight of the object of mass
20kg. (g= 10 m/s^2)

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

What causes the formation of ocean currents?

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)