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Levart [38]
3 years ago
5

Please answer this im not sure

Physics
1 answer:
vovikov84 [41]3 years ago
8 0

Answer:

the answer is B

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A boy is playing with a ball of mass 72g attached to a string. He is moving it at constant speed in a horizontal circle of radiu
irina [24]

Answer:

Explanation:

radius of circle r = 0.9 m.

(a ) In a motion on circular path , work done is zero because force ( centripetal force ) acts perpendicular to displacement .

( b )

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Putting the values

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angle made in 20 revolutions θ = 20 x 2π = 126.6 rad

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The other of the four organic molecules is carbohydrates. 
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Answer:

2) c) give-way vessel

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