A heated gas expands, raising a piston. Which of the following describes the energy exchanges of this process? a. Energy is transferred to the gas by the piston and to the piston from the heat source.
b. Energy is transferred directly to the piston from the heat source.
c. Energy is transferred to the gas from the heat source and to the raised piston from the gas.
d. Energy is transferred to the gas in the form of heat and work done by the piston.

What are similarities and differences of reflection, refraction, diffraction and absorption?

It is really hard for me right know

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