Problem 1 21

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Problem 1.21 [Difficulty: 1]
Given: Specific heat, speed, and volume data in certain units
Find: Convert to different units
Solution:
Using data from tables (e.g. Table G.2)
(a) 4.18
kJ
kg K⋅⋅ 4.18
kJ
kg K⋅⋅
1 Btu⋅
1.055 kJ⋅×
1 kg⋅
2.2046 lbm⋅×
1 K⋅
1.8 R⋅×= 0.998
Btu
lbm R⋅⋅=
(b) 30
m
s
⋅ 30 m
s
⋅ 3.281 ft⋅
1 m⋅×
1 mi⋅
5280 ft⋅⋅
3600 s⋅
hr
⋅= 67.1 mi
hr
⋅=
(c) 5 L⋅ 5 L⋅ 1 m
3⋅
1000 L⋅×
100 cm⋅
1 m⋅
1 in⋅
2.54 cm⋅×
⎛⎜⎝
⎞
⎠
3
×= 305 in3⋅=