Pregunta
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Two different rivers have drops that are the same height. In river A , this drop of the river is a waterfall. In river B, this drop has the generator for a hydroelectric dam. In what way does the energy of the water differ between the drops in the two rivers? (1 point) The potential energy of the water would be less at the top of the drop in the waterfall river A than at the hydroelectric dam in river B . The kinetic energy of the water would be less at the bottom of the drop in the waterfall river A than at the hydroelectric dam river B . The potential energy of the water would be greater at the top of the drop in the waterfall river A than at the hydroelectric dam in river B. The kinetic energy of the water would be greater at the bottom of the drop in the waterfall river A than at the hydroelectric dam in river \( B \).

Ask by Ramirez Reeves. in the United States
Jan 27,2025

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The kinetic energy of the water is greater at the bottom of the waterfall in River A compared to the hydroelectric dam in River B.

Solución

The correct answer is: **The kinetic energy of the water would be greater at the bottom of the drop in the waterfall river A than at the hydroelectric dam in river B.** **Explanation:** In River A, where there is a natural waterfall, the water falls freely without any energy being extracted, allowing it to convert most of its potential energy into kinetic energy by the time it reaches the bottom. In River B, the hydroelectric dam extracts some of the water's energy to generate electricity, which means less kinetic energy remains in the water as it reaches the bottom. **Answer:** The kinetic energy of the water would be greater at the bottom of the drop in the waterfall river A than at the hydroelectric dam in river \( B \).

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Beyond the Answer

At the top of the drop in both rivers, the potential energy is the same since the height is identical. However, at the bottom of the drop, the kinetic energy differs due to the setup of the respective environments. In river A, as the water cascades over the waterfall, it rapidly loses potential energy, converting it into kinetic energy, creating a dramatic flow. Conversely, in river B, the water is harnessed by the hydroelectric dam, which can slow down the water flow to optimize energy conversion into electricity. Hence, the kinetic energy of the water would be less at the bottom of the drop in river A than at the hydroelectric dam in river B, as the dam’s design allows for a controlled and efficient energy extraction process.

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