Old Faithful geyser in Yellowstone Park shoots water hourly to a height of 30 m. With what velocity does the water leave the ground?
a. 7.0 m/s
c. 24 m/s
b. 14 m/s
d. 28 m/s
Question 2
A heat engine operating between a pair of hot and cold reservoirs with respective temperatures of 500 K and 300 K will have what maximum efficiency?
a. 60
c. 40
b. 50
d. 30