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Ksivusya [100]
3 years ago
13

An isolated conducting sphere has a 16 cm radius. One wire carries a current of 1.0000020 A into it. Another wire carries a curr

ent of 1.0000000 A out of it. How long would it take for the sphere to increase in potential by 1260 V?
Physics
1 answer:
timofeeve [1]3 years ago
5 0

Answer:

It takes 11.20 ms for the sphere to increase in potential by 1260 V

Explanation:

Using the formula q = It where I is current in Ampere, and t is in seconds

q = ( 1.000002 - 1.0000000) t

q = 0.000002t

Voltage on the surface of the sphere V = Kq / r

where K is 9.0 × 10⁹ N².m² / c² and

R = 16 cm = 16 /100 = 0.16m

V = Kq /r

substitute the value into q

V = K(0.000002t) / r

cross multiply

rV = K × 0.000002t

make t subject of the formula

t = 0.16 × 1260 / ( 9×10⁹ × 0.000002)

t = 201.6 / ( 18 × 10³)

t = 0.0112 s

  = 11.20 ms

It takes 11.20 ms for the sphere to increase in potential by 1260 V

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Answer:

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Suppose a sound wave and an electromagnetic wave have the same frequency. Which has the longer wavelength? 1. the electromagneti
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Answer:

1. the electromagnetic wave.

Explanation:

Mathematically,

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7 0
3 years ago
Is v2 = v1t+a dimensionally correct? Explain please!
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You want v2 = v1 + at
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the dimensions multiply like algebraic quantities. 
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 the units for (v1 + at) are (m/s) + (m/s2)(s)
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What time that take if wavelength 1/10^8 and 3*10^8 m/s?
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3 years ago
A group of hikers hear an echo 2.6 s after they shout. The temperature is 20 ◦C. How far away is the mountain that reflected the
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Answer:

x = 445.9\,m

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