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DedPeter [7]
3 years ago
12

Kate is working on a project in her tech education class. She plans to assemble a fan motor. Which form of energy does the motor

convert most of its electric energy into?
A.
light energy
B.
motion energy
C.
sound energy
D.
thermal energy
Physics
1 answer:
andreyandreev [35.5K]3 years ago
7 0

Motion Energy

I am writing this so it can be more than 20 letters

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Answer:

3.467 s

Explanation:

given,

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initial speed of the of the rock, v = 17 m/s

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-0.049 = -17 t -\dfrac{1}{2}\times 9.8\times t^2

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s = ut +\dfrac{1}{2}at^2

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now,

t_2 = \dfrac{-(-17)\pm \sqrt{17^2 - 4\times 4.9 \times (-0.049)}}{2\times 4.9}

t₂ = 3.47 s ,-0.0028 s

rejecting negative values

t₂ = 3.47 s

now, time elapsed is = t₂ - t₁ = 3.47 - 0.0028 = 3.467 s

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