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Physics / Conceptual Physics 12 / Chapter 18 / Problem 7P

Conceptual Physics | 12th Edition | ISBN: 9780321909107 | Authors: Paul G. Hewitt

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A power station with an efficiency of 0.4 generates 108 W

Chapter 10, Problem 7P

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QUESTION:

A power station with an efficiency of 0.4 generates 108 W of electric power and dissipates 1.5 × 108 J of heat energy each second to the cooling water that flows through it, which increases its temperature by 3 Celsius degrees. Knowing that the specific heat of water in SI units is 4184 J/kg·°C, show that 12,000 kg of warmed water flows through the plant each second.

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QUESTION:

A power station with an efficiency of 0.4 generates 108 W of electric power and dissipates 1.5 × 108 J of heat energy each second to the cooling water that flows through it, which increases its temperature by 3 Celsius degrees. Knowing that the specific heat of water in SI units is 4184 J/kg·°C, show that 12,000 kg of warmed water flows through the plant each second.

ANSWER:

Step 1 of 4

Heating each of water through takes

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