Q. Hydraulic engineers in the United States often use, as a units of volume of water, the acre-foot, defined as volume of water that will cover 1 acre (where 1 acre = 43560 ft2) of land to a depth of 1 ft. A severe thunderstorm dumped 2.60 in. of rain in 30 min on a town of area 42km2. What volume of water, in acre-feet, fell on the town?
Q. On a cool morning, when the temperature is 11 ^circC, you measure the pressure in your car tires to be 30.0 psi. After driving 20 mi on the freeway, the temperature of your tires is 53 ^circC.