A body of mass 50k/g suspended from a spring balance attached to the celling of an elevator what is the reading of the balance if the elevator moves A, upward with an acceleration of 3m/s B, downward with an acceleration of 2m/s C, with constant velocity ​

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)