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____ [38]
4 years ago
12

A snail slowly travels down the sidewalk at a pace of 4 cm/s. how long will it take the snail to reach a distance of 20 cm?

Physics
1 answer:
egoroff_w [7]4 years ago
8 0
It’s gonna take it 5 cm to reach the distance
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The summary of the given statement is explained below throughout the explanation segment.

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A resistor is connected in series with an AC source that provides a sinusoidal voltage of v of t is equal to V times cosine of b
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<h2>Answer:</h2>

In circuits, the average power is defined as the average of the instantaneous power  over one period. The instantaneous power can be found as:

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So:

P=\frac{1}{T}\intop_{0}^{T}v_{m}cos(\omega t)i_{m}cos(\omega t)dt \\ \\ P=\frac{v_{m}i_{m}}{T}\intop_{0}^{T}cos^{2}(\omega t)dt \\ \\ But: cos^{2}(\omega t)=\frac{1+cos(2\omega t)}{2}

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In terms of RMS values:

V_{RMS}=V=\frac{v_{m}}{\sqrt{2}} \\ \\ I_{RMS}=I=\frac{i_{m}}{\sqrt{2}} \\ \\ Then: \\ \\ P=VI

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