Why is it important for heat sinks to be made of metal and have a large surface area?

Four 5-gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. use the following specific heat capacity data to determine which block will increase its temperature the most.

Part of a control linkage for an airplane consists of a rigid member cb and a flexible cable ab. if a force is applied to the end b of the member and causes it to rotate by θ = 0.5°, determine the normal strain in the cable. originally the cable is unstretched.

Two cans on a sunny window one black and the other white construct and explanation of the effect of sun will have on both cans over a two hour period?