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20-05-2016
Biology

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Brianna weighs 425 N. She climbs a flight of stairs to a height of 8 m. It takes her 6 seconds.

How much work does Brianna do when she climbs the stairs?

A.
3400 J

B.
53 J

C.
2550 J

D.
71 J
a

Respuesta :

26-05-2016

a is the correct answer

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