Hawkins 2053 Exam 4 Fall16 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A Carnot heat engine has an efficiency of0.400. If it operates between a deep lake with a constant 1) temperature of 283.0 K and a hot reservoir, what is the temperature of the hot reservoir A) 396 K B) 472 K C) 991 K D) 708 K 2) A 6.6 L volume of ideal neon gas (monatomic) is at a pressure of4.1 atmospheres and a temperature 2) of 350 K. The atomic mass of neon is 20.2 g/mol. In this situation, the temperature of the gas is increased to 450 and the volume is increased to8.6 L. The final pressure of the gas, in atmospheres, is closest to: A) 5.3 B) 3.6 C) 4.0 D) 4.5 E) 4.9 3) How many logs 3.00 m long and22.0 cm in diameter are needed to just barely float a 2500.0 kg car 3) (ρwood = 0.840 g/cm ) A) 138 B) 34 C) 35 D) 137 4) A Carnot engine operates between a high temperature reservoir at478 K and a river with water at 4) 286 K. If it absorbs3800 J of heat each cycle, how much work per cycle does it perform A) 1423 J B) 1526 J C) 2274 J D) 2377 J 5) How much heat must be added to a 2 kg block of ice at -°C to change it to water at11°C 5)