A moving company is called into a building and asked to relocate 520 bricks to a location 15 meters above the ground. If each br

Question

3 years ago

13

A moving company is called into a building and asked to relocate 520 bricks to a location 15 meters above the ground. If each br

ick is 4 kilograms, what amount of work will be needed to accomplish the task? A. 305,760 J B. 229,320 J C. 203,840 J D. 588,000 J

Chemistry

2 answers:

Blababa [14] · Answer 1 · 2022-02-05T17:20:29+03:00

Blababa [14]3 years ago

3 0

Work = Force * distance (aka Weight * height lifted)

Work to lift 1 brick:
W = mgh = (4 kg)(9.8 m/s²)(15 m) = 588 J

Work to lift 520 bricks:
W = 520(588 J) = 305,760 J

Pepsi [2] · Answer 2 · 2022-02-05T19:49:21+03:00

Pepsi [2]3 years ago

3 0

I just took the test, the answer is A. 305,760 J, good luck.