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weeeeeb [17]
4 years ago
6

How does the use of hydroelectric energy compare to the use of coal?

Chemistry
1 answer:
lora16 [44]4 years ago
4 0
<span>Hydroelectric energy uses the movement of water to spin a turbine and produce electricity. Coal is a fossil fuel that is burned as an energy source, which results in emissions such as carbon dioxide, nitrogen, and sulfur. Coal use is associated with waste products both from the mining process to acquire the coal and also from the actual use of coal itself. Hydroelectric energy does not involve waste, but does pose potential problems to waterways. Coal use is more common than the use of hydroelectric energy.</span>
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Which one of Newton's Laws fits this statement: More mass means more force needed to accelerate?
ivolga24 [154]

Answer:

Newton's Second Law

Explanation:

Newton's second law basically states that the acceleration of a body which is produced by a net force is directly proportional to the magnitude of net force applied in the same direction.

This tells us that

     F   is directly proportional to a

⇒ F= ma

So we can also state from the above equation, that when we have more mass, we need more net force to accelerate it. Here, we are keeping the acceleration constant so we can surely say that force and mass varies directly.

Therefore, we have made good use of Newton's Second Law of motion to arrive at this conclusion.

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4 years ago
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Answer:

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids)

Explanation:

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4 years ago
What's the mass if a nickel
Mashutka [201]
<span>58.6934 +/- 0.0002 u</span>
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