Bundle: Physics For Scientists And Engineers With Modern Physics, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Multi-term
10th Edition
ISBN: 9781337888516
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 9, Problem 33P
(a)
To determine
The amount of fuel and oxidizer.
(b)
To determine
The amount of fuel and oxidizer if the exhaust velocity is
(c)
To determine
To explain: The amount of fuel in first part is not 2.5 times the fuel in part (b).
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The Earth's atmosphere is composed of about 78 percent nitrogen, 21 percent oxygen, 0.9
percent argon, and 0.1 percent other gasses. To find out why these gasses are "trapped" in the
earth's atmosphere, consider a projectile with mass m that is about to launch vertically upward
from earth.
e. Ignore air resistance, show that the projectile can only escape the magnetie pull of the
earth if it is launched vertically upward with a kinetic energy greater than mgRearth, where
g = 9.80 m/s? and the earth's radius Rearth = 6378 km.
f. Compute the temperature required by a nitrogen molecule (molar mass 28.0 g/mol) and
an oxygen molecule (molar mass 32 g/mol) to achieve the average translational kinetie
energy required to escape earth?
g. Repeat part (b) for the moon, for which g = 1.63 m/s? and Rmoon = 1740 km.
h. Present your conclusion on the atmosphere of earth and moon based on the results from
parts (b) and (c).
A rocket is designed to produce 5 MN of thrust at sea level (assume ambient pressure of 0.1 MPa). The pressure in the combustion chamber is 7 MPa and temperature 2800 K. If the working fluid is assumed to be an ideal gas at room temperature with properties of N2 gas at room temperature (molecular weight 28 kg/kmole). Determine specific impulse, mass flow rate, characteristics velocity and throat diameter.(Take R=8314 J/kmole-K, specific heat ratio 1.4 and nozzle exit pressure as 0.1 MPa)
Chapter 9 Solutions
Bundle: Physics For Scientists And Engineers With Modern Physics, 10th + Webassign Printed Access Card For Serway/jewett's Physics For Scientists And Engineers, 10th, Multi-term
Ch. 9.1 - Two objects have equal kinetic energies. How do...Ch. 9.1 - Your physical education teacher throws a baseball...Ch. 9.3 - Two objects are at rest on a frictionless surface....Ch. 9.3 - Rank an automobile dashboard, seat belt, and air...Ch. 9.4 - Prob. 9.5QQCh. 9.4 - A table-tennis ball is thrown at a stationary...Ch. 9.6 - A baseball bat of uniform density is cut at the...Ch. 9.7 - A cruise ship is moving at constant speed through...Ch. 9 - A particle of mass m moves with momentum of...Ch. 9 - A 3.00-kg particle has a velocity of...
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