Thermo solution1 - Copy

Thermo solution1 - Copy - 650:351 Thermodynamics Doyle...

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650:351 Thermodynamics Doyle Knight Department of Mechanical and Aerospace Engineering Rutgers - The State University of New Jersey New Brunswick, NJ USA Tel: 732 445 4464 · Email: doyleknight@gmail.com OFce hours: Tuesday and ±riday, 10:30 am to 12 noon and by appointment
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Homework Assignment No. 1 Problem 2.34 A steel plate of 950 kg accelerates from rest at 3 m/s 2 for a period of 10 s. What force is needed and what is the Fnal velocity ? Solution The force is F = ma = 950 · 3 = 2 , 850 N The Fnal velocity is v = at = 3 · 10 = 30 m/s 650:351 Thermodynamics Page 1
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Homework Assignment No. 1 Problem 2.42 One kilogram of diatomic oxygen (O 2 , molecular weight 32) is contained in a 500 L tank. Find the speci±c volume on both a mass and mole basis ( v and ¯ v ). Solution The speci±c volume is v = volume mass = 500 · 10 3 1 = 0 . 5 m 3 /kg The molar speci±c volume is ¯ v = volume kg-moles The number of kg-moles in the volume is kg-moles = 1 kg 32 kg/kg-mole = 1 32 Thus, ¯ v = 0 . 5 1 / 32 = 16 m 3 /kg-mole 650:351 Thermodynamics Page 2
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Homework Assignment No. 1
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Thermo solution1 - Copy - 650:351 Thermodynamics Doyle...

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