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Olin [163]
2 years ago
10

All nuclear reactions generate radioactive waste. Which answer correctly lists

Physics
1 answer:
sasho [114]2 years ago
4 0
The answer would be A because
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Suppose a 4.0-kg projectile is launched vertically with a speed of 8.0 m/s. What is the maximum height the projectile reaches?
eduard

Answer:

h = 3.3 m (Look at the explanation below, please)

Explanation:

This question has to do with kinetic and potential energy. At the beginning (time of launch), there is no potential energy- we assume it starts from the ground. There, is, however, kinetic energy

Kinetic energy = \frac{1}{2}mv^{2}

Plug in the numbers = \frac{1}{2}(4.0)(8^{2})

Solve = 2(64) = 128 J

Now, since we know that the mechanical energy of a system always remains constant in the absence of outside forces (there is no outside force here), we can deduce that the kinetic energy at the bottom is equal to the potential energy at the top. Look at the diagram I have attached.

Potential energy = mgh = (4.0)(9.8)(h) = 39.2(h)

Kinetic energy = Potential Energy

128 J = 39.2h

h = 3.26 m

h= 3.3 m (because of significant figures)

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Extraneous variables are any variables that you are not intentionally studying in your experiment or test

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As temperature increases, what happens to the density of ocean water? A. changes unpredictably B. decreases C. does not change D
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As the temperature of water increases, the density of water will decrease.
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Which of the following is the BEST explanation for why oceans have two different types of currents?
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sddww

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szsswa

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