Answer:
It is never a good idea to ask <em>Your parents </em>for a letter of recommendation.
The correct answer is C) The temperature of the water will increase; the temperature of the solid will decrease.
In fact, the solid is at higher temperature, so when it is put inside the water it starts to release heat to the water. As a result, the temperature of the solid decreases, and since the heat is absorbed by the water, the temperature of the water increases. This process continues until the water and the solid reach thermal equilibrium (i.e. until they reach same temperature).
The period of wave that moves a boat upside down 10 times in 2 seconds is 5 second.
<h3>What is the period of wave?</h3>
The period of a wave is given as the number of times a wave complete its turn in a second. The wave period can be given as:
Period of wave = Oscillation per second
The number of oscillations of the wave are equivalent to the oscillation of the boat.
The number of oscillation in 2 second are 10. Thus, the period of wave is given as:
2 sec = 10 oscillations
1 sec = 10/2 oscillations
1 sec = 5 oscillations
Thus, the number of oscillations per second are 5. Therefore, the period of wave is 5 second.
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