csamayoa1760
10.12.2020 •
Biology
A boy holds a ball of clay above the floor. He drops the clay ball, and it speeds up as it falls to the
floor. The clay ball flattens as it hits the floor and remains flat. When the clay ball hits the floor, the clay
and the floor get a little warmer. (Assume that no energy is transferred between the clay ball and the air
or between the floor and the air.)
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Ответ:
C. The total amount of energy in the system stays the same because the decrease in energy due to the clay ball moving closer to the ground is equal to the increase in energy due to the clay ball and the floor getting warmer.
Explanation:
Ответ:
2 hours and 42 minutes is 2.7 hours.
You multiply 2.7 x 80, getting 216, so the train traveled
216 miles.