28. The mass of a steel building frame is 5500 kg. What power is used to raise it to a helght of 5.0 m If the work is done in 12.0 seconds? Remember to include your data, equation, and work when solving this problem.

2292W

Explanation:

Use the formula for energy first:

Where E = Energy || D = Distance || M = Mass.

Solve that equation:

E = 5 * 5500    ==>     27500J

To find power, divide energy per time:

27500J / 12s =~  2292W

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answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.