How does Young's modulus change with rise in temperature?

Young's modulus is

How does entropy changes with a. Increase in temperature b. Decrease in pressure?

A block of wood is floating on water at 0^(@)C with a certain volume V above water level. The temperature of water is slowly raised to 20^(@)C . How does the volume V change with the rise of temperature ?

Is it difficult to make an intrinsic semiconductor? Name two factors on which the electrical conductivity of intrinsic semiconductor at a given temperature depends. How does the conductivity of a semiconductor change with the rise in its temperature?

Young's modulus of a wire depends on

The young's modulus of air is