Which of the following best describes the relationship between the speed of sound and the type of medium through which it travels?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Avoltaic cell converts chemical energy to

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)