2 years ago

A woman jogs 20 km in 4 hours, then another 10 km in 2 hours. What is her average speed?

Physics

1 answer:

murzikaleks [220]2 years ago

4 0

Answer:

I think 5 km/h but I am not sure

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The current that charges a capacitor transfers energy that is stored in the capacitor’s electric field. Consider a 2.0 μF capaci

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Answer:

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Explanation:

Given,

Capacitance of the capacitor = 2.0 μF

energy stored = 200 W

time (t) =2.0 μs

Capacitor voltage = ?

$\dfrac{dE}{dt}=200 W$

$E =200\times 2 \times 10^{-6}$

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we know,

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$V =\sqrt{\dfrac{2\times 400 \times 10^{-6}}{2\times 10^{-6}}}$

$V =\sqrt{400}$

V = 20 V

so , the capacitor voltage is V = 20 V

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