Directions Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the
end of the activity, write a brief evaluation of your work.
Activity
Open the Ohm's law simulation e. Use it to answer the following questions.
Part A
The simulation shows current in milliamps. Why was this size unit-with the prefix milli-used in this simulation? If
needed, refer to the math review on converting units.

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.