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Ahat [919]
3 years ago
11

Which of these statements are true about hydroelectric power? A.It is the most widely used renewable energy source in the world.

B.It never disrupts ecosystems. C.It is not always available. D.A hydroelectric dam controls the force of moving water to generate electricity.
Physics
1 answer:
Ede4ka [16]3 years ago
6 0
D is the answer most true
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Which of the following gases are typically used for colorful lighting when an electric current is apllied
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What property do protons can electrons have that neutrons do not ?
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An astronaut lands on a new, recently discovered planet in a different star system. The astronaut measures the acceleration due
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Answer:

The radius of the new planet is ~2.04 * 10⁶ m, or 2,041,752 m.

Explanation:

We can use Newton's Law of Universal Gravitation:

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We are solving for the radius of the new planet, so we can rearrange the equation:

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Substitute in our known values given in the problem (<u><em>G = 6.67 * 10⁻¹¹ </em></u><em> ; </em><u><em>M = 7.5 * 10²³</em></u><em> ; </em><u><em>a = 12</em></u>).

  • \displaystyle r =\sqrt{\frac{(6.67\times 10^{-11})(7.5 \times 10^{23}}{12} }
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The radius of the new planet is ~2.04 * 10⁶ m.

3 0
2 years ago
A motor uses motion in a magnetic field to produce an electric current. true or false
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Well, that's a nice, concise description, but it applies to a
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5 0
3 years ago
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