Ga sinusoidal wave of frequency f is traveling along a stretched string. the string is brought to rest, and a second traveling wave of frequency 2f is established on the string. what is the wave speed of the second wave?

The two required components for a generator

Which sound characteristic is not affected by the relative motion of an object

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)