6. The processing speed of a computer refers to the number of binary operations it can perform in a second. Thus, the processing speed is actually a frequency. If the processor of a personal computer operates at 1.80
GHz (1 GHz = 109Hz ), how much time is required for one processing cycle?

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.