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(20%) A closed system undergoes a process during which there is energy transfer from the system by heat at a constant rate of 10 kW, and the power varies with time according to -8t W = -8 0 1h where t is time, in h, and W is in kW. (a) What is the time rate of change of system energy at t = 0.6 h, in kW? (b) Determine the change in system energy after 2 h, in kJ.

(20%) A closed system undergoes a process during which there is energy transfer from the system by heat at a constant rate of 10 kW, and the power varies with time according to -8t W = -8 0 1h where t is time, in h, and W is in kW. (a) What is the time rate of change of system energy at t = 0.6 h, in kW? (b) Determine the change in system energy after 2 h, in kJ.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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(20%) A closed system undergoes a process during which there is energy transfer from the system by heat at a constant rate of 10 kW, and the power varies with time according to -8t W = -8 0<t≤1h t> 1h where t is time, in h, and W is in kW. (a) What is the time rate of change of system energy at t = 0.6 h, in kW? (b) Determine the change in system energy after 2 h, in kJ.
Transcribed Image Text:(20%) A closed system undergoes a process during which there is energy transfer from the system by heat at a constant rate of 10 kW, and the power varies with time according to -8t W = -8 0<t≤1h t> 1h where t is time, in h, and W is in kW. (a) What is the time rate of change of system energy at t = 0.6 h, in kW? (b) Determine the change in system energy after 2 h, in kJ.
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