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lyudmila [28]
3 years ago
7

List of energy changes when hydroelectricity city is made​

Physics
1 answer:
ryzh [129]3 years ago
8 0

Answer:

A turbine and generator produce the electricity

Explanation:

"A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity.

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A 190 g rock at 20°C is completely immersed in 600 g of water at 80°C. Which one of the following statements is true right after
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Rock is completely immersed in hot water. By the second law of thermodynamics, thermal energy or heat is transferred from substance with higher temperature to substance with lower temperature until they come to thermal equilibrium i.e. both at same temperature.

It is given here that rock is at 20°C which is at lower temperature than water at 80°C. ∴Heat or thermal energy flows from water to rock. So, right choice is-

A. The water gives the rock thermal energy and gets no thermal energy in return.

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The number of electrons an atom would gain or lose when forming ionic bonds. It can be positive, negative or zero.
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Answer:

<u>In an ionic bond , an element will have to lose or gain electrons.</u>

Explanation:

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2 years ago
A truck pulls a block 8 meters across a level surface at a force of 216 N over the course of 12 seconds. How much power did the
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<h2> and</h2>

Power(P)= Work(W)/Time taken(T)

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# 5 what will most likely happen when an air mas of low temperature exists above a water body at a higher temperature?
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Answer: Heat will transfer from the water to the air. When a mass of air moves on a warmer surface it is heated by its base. Then thermal instability develops in the lower layers and then extends upwards. If the air initially contained inversions, these are destroyed and a strong gradient is established uniformly in the lower troposphere temperature.
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Which one of the following statements does not accurately describe vibrations?
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