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SVEN [57.7K]
3 years ago
9

Sometimes in the winter, ice crystals grow directly from the moisture in the air. As the water changes from a gas to a solid, th

e molecules
Group of answer choices


slow down as they gain energy.


slow down as they lose energy.


speed up as they lose energy.


speed up as they gain energy.
Physics
1 answer:
mrs_skeptik [129]3 years ago
7 0

Answer: B. slow down as they lose energy

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EleoNora [17]
If no frictional work is considered, then the energy of the system (the driver at all positions is conserved.

Let
position 1 = initial height of the diver (h₁), together with the initial velocity (v₁).
position 2 = final height of the diver (h₂) and the final velocity (v₂).

The initial PE = mgh₁ and the initial KE  = (1/2)mv₁²
where g = acceleration due to gravity,
m = mass of the diver.
Similarly, the final PE and KE are respectively mgh₂ and (1/2)mv₂².
PE in position 1 is converted into KE due to the loss in height from position 1 to position 2.
 
Therefore
(KE + PE) ₁ = (KE + PE)₂

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D) All of the above.
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