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Problem

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question

Water flows at a rate of 2.5 m^3 \textbullet s^-1 over a waterfall of height 15 m. What is the maximum difference in tem-perature between the water at the top and at the bottom of the waterfall and what usable power is going to waste? The density of water is 10^3 kg \textbullet m^-3 and its specific heat capacity is 10^3 cal \textbullet kg^-1 \textbullet C deg^-1.

category

physics

options

  1. 0.030°C and 307.5 kW
  2. 0.055°C and 567.5 kW
  3. 0.050°C and 507.5 kW
  4. 0.045°C and 476.5 kW
  5. 0.075°C and 767.5 kW
  6. 0.035°C and 367.5 kW
  7. 0.015°C and 167.5 kW
  8. 0.025°C and 267.5 kW
  9. 0.040°C and 407.5 kW
  10. 0.065°C and 667.5 kW

src

stemez-Physics

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