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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:

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Explanation:

\texttt{Capacitance, C}=\frac{\varepsilon_0A}{d}

Where A is the area, d is the gap between plates and ε₀ is the dielectric constant.

Let C₁ be the capacitance of first capacitor with area A₁ and gap between plates d₁.

We have    

              \texttt{Capacitance, C}_1=\frac{\varepsilon_0A_1}{d_1}=C

Similarly for capacitor 2

               \texttt{Capacitance, C}_2=\frac{\varepsilon_0A_2}{d_2}=\frac{\varepsilon_0A_1}{\frac{d_1}{2}}=2\times \frac{\varepsilon_0A_1}{d_1}=2C

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From (1) & (2),     4.4/2.5 = d'/1.68

                                   d' = 2.96 cm ⇒ the required extension.

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