Sustainable Energy
1st Edition
ISBN: 9781133108689
Author: Richard A. Dunlap
Publisher: Cengage Learning
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In a racing contest, there are 240 cars which will have fuel provisions that will last for 15 hours. Assuming a constant hourly consumption for each car, how long will the fuel provisions lasts if 8 cars withdraw from the race every hour after the first.
Select one:
a. 20 hours
b. 25 hours
c. 36 hours
d. 18 hours
A 900-kg compact car moving at 60 mi/hr has approximately 320 000 Joules of kinetic energy. Estimate its new kinetic energy if it is moving at 30 mi/hr. (HINT: use the kinetic energy equation as a "guide to thinking.")
A cylindrical underground storage tank with a diameter of 18.0 ft. and a height of 25.0 ft. is filled with gasoline. Given a density of 675 kg/m3, determine the mass of the gas in the tank in both lbm and kg. If the average automobile gas tank holds 25.0 gallons, calculate the number of autos that may be filled from the underground facility.
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