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Ber [7]
3 years ago
10

If a cross country runner covers a distance of 347 meters in 134 seconds what is her average speed?

Physics
1 answer:
a_sh-v [17]3 years ago
6 0
347÷134=2.589552239 meters per second

2.589552239×60= 155.3731343 meters per hour

155.3731343 meters per hour= 0.096544389701642 miles per hour

hopefully this was right.
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aleksandr82 [10.1K]

Answer:

option (b)

Explanation:

Let the resistance of each resistor is R.

In series combination,

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rs = r + R + R + .... + n times = NR

Let V be the source of potential difference.

Power in series

Ps = v^2 / Rs = V^2 / NR ..... (1)

In parallel combination

the effective resistance is Rp

1 / Rp = 1 / R + 1 / R + .... + N times

1 / Rp = N / R

Rp = R / N

Power is parallel

Rp = v^2 / Rp = N V^2 / R    ..... (2)

Divide equation (1) by equation (2) we get

Ps / Pp = 1 / N^2

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3 years ago
A 12.0 khz, 16.0 v source connected to an inductor produces a 4.00 a current. what is the inductance?
Varvara68 [4.7K]
Inductive reactance (Z) = ω L  =  2Πf L = (2Π) (12,000) (L)

I = V / Z

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96,000 Π L = 16v

Divide each side by  (96,000 Π) :

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Light reflected from a glass surface is polarized along the plane perpendicular to the glass surface. Please select the best ans
leva [86]

I believe it would be true not 100% sure


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<h3>Mechanical weathering</h3>

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Read more on Mechanical weathering:

brainly.com/question/857495

3 0
2 years ago
Why is it so important that you take care of your nervous system?
Ierofanga [76]

Answer:

The nervous system handles the stress response, which, if overworked, can eventually lead to diseases ranging from high blood pressure to diabetes.

Explanation:

hope I helped

3 0
2 years ago
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