Answer: No sure what to do
Explanation: points for points
Answer: 0.14 Hz
Explanation:
We are told the person counts 10 waves in 68 s, from this information we can calculate the frequency , which is defined as the number of oscilations or waves per unit of time. Then:
This is the frequency of the ocean waves. Now, according to the International System of Units (SI), frequency is measured in Hertz (), which is equivalent to .
So, according to this, the frequency of the ocean waves is
The correct answer is <span>3)
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In fact, the total energy of the rock when it <span>leaves the thrower's hand is the sum of the gravitational potential energy U and of the initial kinetic energy K:
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<span>As the rock falls down, its height h from the ground decreases, eventually reaching zero just before hitting the ground. This means that U, the potential energy just before hitting the ground, is zero, and the total final energy is just kinetic energy:
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But for the law of conservation of energy, the total final energy must be equal to the tinitial energy, so E is always the same. Therefore, the final kinetic energy must be
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Can go from quarter to half to 75 to a full moon there is also gibbous and crescent moon phases, but generally it starts in the west <span />