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victus00 [196]
3 years ago
10

14. Which of the following is not an example of work being done?

Physics
1 answer:
Natali5045456 [20]3 years ago
7 0

Answer:

B. holding a coffee mug

Explanation:

Something must move a distance for work to be done.

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A 1.60 m tall person lifts a 2.10-kg book from the ground so it is 2.20 m above the ground. What is the potential energy of the
Viefleur [7K]

Answer:

Explanation:

Given

mass of book(m)=2.1 kg

height up to which book is lifted is (h)2.2 m

height of person (h_0)1.6 m

Potential energy of book relative to ground=mgh

PE=2.1\times 9.8\times 2.2=45.276 J

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work done by person in lifting box 2.2 m w.r.t floor

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3 years ago
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2 years ago
" When the apple falls,does the apple also attract the earth?​
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Which of the following is NOT true about power?
Andrews [41]

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