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Mkey [24]
3 years ago
6

2. An alternating current is represented by the equation I=20sin 100mt.

Physics
1 answer:
Sladkaya [172]3 years ago
3 0

Explanation:

The general equation of an AC current is given by :

I=I_o sin\omega t

Where

I₀ is the peak value of current

\omega is angular frequency

As\ \omega=2\pi f

So,

f=\dfrac{\omega}{2\pi}\\\\f=\dfrac{100\pi}{2\pi}\\\\f=50\ Hz

We know that,

I_{rms}=\dfrac{I_0}{\sqrt{2}}\\\\=\dfrac{20}{\sqrt{2}}\\\\I_{rms}=14.14\ A

So, the frequency is 50 Hz and the maximum rms value of current is 14.14 A.

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Answer:

h=15.27m

Explanation:

Since at maximum height the vertical velocity must be null it's better to use the formula:

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We will use this formula for the vertical direction, choosing the upward direction as the positive one, so we have:

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In 1993 Ileana Salvador of Italy walked 3.0km in under 12min. Suppose that during her walk Salvador is observed to steadily incr
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The motion of Ileana is a uniformly accelerated motion (constant acceleration), therefore we can use the following suvat equation:

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s=(\frac{4.20+5.00}{2})(25.0)=115 m

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Answer:

the answer is at the BOTTOM OF THEIR QUESTION

Explanation:

IT IS CORRECT BTW

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3 years ago
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