(a)
To Calculate:Rate at which falling water must supply energy to the turbine.
(a)
Answer to Problem 47A
Rate at which falling water must supply energy to the turbine is
Explanation of Solution
Given:
Power output and efficiency are:
Formula used:
Calculation:
Efficiency:
Rearranging the above formula to get
Substitute the values:
Conclusion:
Hence, therate at which falling water must supply energy to the turbine
(b)
To Calculate:Change in gravitational potential energy needed in each second.
(b)
Answer to Problem 47A
Explanation of Solution
Given:
Power output and efficiency are:
Formula used:
Calculation:
Rearranging the above formula to get
Substitute the values in above formula,
Conclusion:
Hence,change in gravitational potential energy needed in each second is
(c)
To Calculate:Mass of the water that must pass through the turbine each second.
(c)
Answer to Problem 47A
Explanation of Solution
Given:
Formula used:
Where,
Calculation:
Rearrange the above formula to get mass
Substituting the values in above formula
Conclusion:
Hence,mass of the water that must pass through the turbine each second to supply the power is
Chapter 25 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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