Hey guys i really really need with this question for asap! explain what chart junk is and how it differs from the kind of items you should include in your graphs. provide four examples?

the second question is explain what chart junk is and how it differs from the kind of items you should include in your graphs. provide four examples.

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.