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1-1
Solutions Manual
for
Fundamentals of Thermal Fluid Sciences
5th Edition
Yunus A. Çengel, John M. Cimbala, Robert H. Turner
McGraw-Hill, 2017
Chapter 1
INTRODUCTION AND OVERVIEW
PROPRIETARY AND CONFIDENTIAL
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1-12 The variation of gravitational acceleration above the sea level is given as a function of altitude. The height at which the
weight of a body will decrease by 0.3% is to be determined.
1-13 The mass of an object is given. Its weight is to be determined.
1-14 A plastic tank is filled with water. The weight of the combined system is to be determined.
m/skg 1
1-15E The constant-pressure specific heat of air given in a specified unit is to be expressed in various units.
Analysis Using proper unit conversions, the constant-pressure specific heat is determined in various units to be
FBtu/lbm 0.240
Ckcal/kg 0.240
CJ/g 1.005
KkJ/kg 1.005
CkJ/kg 4.1868
FBtu/lbm 1
C)kJ/kg (1.005
kJ 4.1868
kcal 1
C)kJ/kg (1.005
g 1000
kg 1
kJ 1
J 1000
C)kJ/kg (1.005
CkJ/kg 1
KkJ/kg 1
C)kJ/kg (1.005
p
p
p
p
c
c
c
c
1-5
1-17 Problem 1-16 is reconsidered. The entire software solution is to be printed out, including the numerical results
1-6
1-18 A resistance heater is used to heat water to desired temperature. The amount of electric energy used in kWh and kJ are
to be determined.
1-19E An astronaut took his scales with him to space. It is to be determined how much he will weigh on the spring and
1-20 A gas tank is being filled with gasoline at a specified flow rate. Based on unit considerations alone, a relation is to be
obtained for the filling time.
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1-24E The mass of a substance is given. Its weight is to be determined in various units.
1-25 The flow of air through a wind turbine is considered. Based on unit considerations, a proportionality relation is to be
obtained for the mass flow rate of air through the blades.
