1. A rectangular steel plate with dimensions of 30 cm x 25 cm is heated from 20C to 220C. What is its change in area? (Coefficient of linear expansion for steel is 11 x 10/C.) a. 0.82 cm? b. 1.65 cm? c. 3.3 cm? d. 6.6 cm? 2. A system is acted on by its surroundings in such a way that it receives 50 J of heat while simultancously doing 20 J of work. What is its net change in internal energy? a. 70J b. 30J C. zero d. -30 J e -70J 3. A 4-mol ideal gas system undergoes an adiabatic process where it expands and does 20 J of work on its environment. What is its change in internal energy? a. -20J b. -5J C. +5J d. +20J e. Zero B .1 .3 .4 Volume, m A reversible heat engine has the PV graph shown. The work done during the entire cycle is a. zero b. 2.5 kJ c. 6.0 kJ d. 2.0 kJ e. 5.0 kJ Pressure, Pa x 104 2.