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3 years ago

A man pushes a grand piano along a level stage with 380 N force that is 15° above the horizontal. The piano

Physics

1 answer:

Andreyy893 years ago

6 0

Answer:1688.393 joules

Explanation:

force along 15°(f) =380N

Φ=15°

Distance=4.6m

Time=9.5s

work=horizontal component force(F) x distance

Horizontal component force=f x cosΦ

Horizontal component of force=380 x cos15

Horizontal component of force =380x0.9659

Horizontal component of force=367.042N

Work=force horizontal component x distance

Work=367.042 x 4.6

Work=1688.393

Work=1688.393 joules

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3 years ago

A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8 x 10- free electrons per cubic meter

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