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Zielflug [23.3K]
3 years ago
6

All of the following statements are true of hydroelectric power EXCEPT: A. Hydroelectric power stations rely on dams to help har

ness the energy of moving water. B. The water within hydroelectric power stations will transfer energy from gravitational potential energy to kinetic energy. C. Hydroelectric power stations can only produce enough energy for a small town as they do not produce large quantities of energy. D. Hydroelectric power stations are very reliable source of energy.
Physics
2 answers:
Artist 52 [7]3 years ago
5 0
The correct answer should be C. Hydroelectric power stations can only produce enough energy for a small town as they do not produce large quantities

Hydroelectric power stations can power even large cities that have millions of people.
kicyunya [14]3 years ago
3 0
In my opinion, the correct answer among the choices listed above is option C. <span>Hydroelectric power stations cannot only produce enough energy for a small town as they do produce large quantities of energy for a large area. Hope this answers the question.</span>
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Answer:

The time taken is  t =  0.356 \ s

Explanation:

From the question we are told that

  The length of steel the wire is  l_1  = 31.0 \ m

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         t_s  = l_1 *  [ \sqrt{ \frac{\rho * \pi *  d^2 }{ 4 *  T} } ]

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      t_s  = 31 *  [ \sqrt{ \frac{8920 * 3.142*  (1*10^{-3})^2 }{ 4 *  122} } ]

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 And

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      t_c  = l_2 *  [ \sqrt{ \frac{\rho_c * \pi *  d^2 }{ 4 *  T} } ]

here  \rho_c is the density of steel with a value  \rho_s  =  7860 \ kg/m^3

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So  

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