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Unformatted text preview: Problem Statement: 28 A small electrical motor produces 10 W of mechanical power. What is this power in: a) N, m, and s units b) kg, m, and s units Schematic: Assumptions/Approximations: None needed Physical Laws: None needed Properties/Sources: Conversions: None needed 1.00 J/s = 1.00 W 1.00 N*m = 1.00 J 1.00 1.00 N Calculations: (a) 10.00 N*m/s (b) 10.00 Reasoning/Verification/Discussion: None needed kg*m/s 2 = kg*m 2 /s 3 = = N 1 m/s kg 1 J 1 m N 1 W 1 J/s 1 ) W 10 ( 2 W = = J 1 m N 1 W 1 J/s 1 ) W 10 ( W Problem Statement: 52 A university campus has 200 classrooms and 400 faculty offices. The classrooms are equipped with 12 fluorescent tubes, each consuming 110 W, including the electricity used by the ballasts. The faculty offices, on average, have 0.5 as many tubes. The campus is open 240 days per year. The classroom and faculty offices are not occupied an average of...
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This note was uploaded on 06/20/2009 for the course THERMO n/a taught by Professor N/a during the Spring '09 term at Abraham Baldwin Agricultural College.
- Spring '09