Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 3, Problem 15P
To determine
Find the volume of fuel needed to accelerate the ship from rest to cruising speed.
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A JET PLANE WHICH WEIGHT 29430 N AND HAS A
WING AREA OF 20 M² FLIES AT A VELOCITY OF 250
KM/HR. WHEN THE ENGINE DELIVERS 7357.5 KW, 65%
OF THE POWER IS USED TO OVERCOME THAT DRAG
RESISTANCE OF THE WING. CALCULATE THE CO-EFFICIENT
OF LIFT AND CO-EFFICIENT OF DRAG FOR THE WING.
TAKE DENSITY OF AIR EQUAL TO 1.21 KG/M³.
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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In a diesel engine the fuel is ignited when it is injected into hot compressed air, heated by the compression itself. In a typical high-speed
diesel engine, the chamber in the cylinder has a diameter of 10.7 cm and a length of 13.4 cm. On compression, the length of the
chamber is shortened by 12.7 cm (a “5-inch stroke"). The compression of the air changes its pressure from 1.00 to 39.5 atm. The
temperature of the air before compression is 391 K.
As a result of the compression, what will be the final air temperature (in Kand °C) just before the fuel injection?
temperature =
K = i
°C
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Hint
Assistance Used
Determine the volume change as a way to get a handle on the new temperature.
What equation relates pressure, temperature, and volume?
The volume of the cylinder = z r² (height).
Remember that the radius is half the diameter.
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