Acceleration occurs when an object speeds up

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

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 (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?