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geniusboy [140]
3 years ago
14

A 9.38 microFarad capacitor is measured to have a reactance of 260.0 Ohm. At what frequency (in Hz) is it being driven?

Physics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

The frequency is 65.25 Hz.

Explanation:

Given that,

Capacitor = 9.38 μF

Reactant = 260.0 ohm

We need to calculate the frequency

Using formula of reactant

X_{c}=\dfrac{1}{2\pi fC}

Where, f = frequency

C = capacitor

X_{c} =reactant

Put the value in to the formula

260.0=\dfrac{1}{2\times\pi\times f\times9.38\times10^{6}}

f=\dfrac{1}{2\times\pi\times9.38\times10^{-6}\times260.0}

f=65.25\ Hz

Hence, The frequency is 65.25 Hz

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Answer:

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Explanation:

Given:

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Using Newton's equation of motion,

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Now, plug in the value of a=\frac{v-u}{t} in the above equation. This gives,

v^{2}-u^{2}=2\times \frac{v-u}{t}\times S\\(v+u)(v-u)=\frac{2(v-u)S}{t}\\t=\frac{2(v-u)S}{(v+u)(v-u)}\\t=\frac{2S}{v+u}

Now, plug in 234000 m for S, 25 m/s for v and 20 m/s for u. Solve for t.

t=\frac{2S}{v+u}\\t=\frac{2\times 234000}{25+20}\\t=\frac{468000}{45}=10400\textrm{ s}

Therefore, the time taken by the train is 10400 s.

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