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Dovator [93]
3 years ago
15

A dry cell gives static electricity true or false?

Physics
1 answer:
Rashid [163]3 years ago
6 0

Answer:

False

Explanation:

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a wall switch is connected to a wall outlet. A lamp is plugged into the same outlet. You turn the switch on, but the lamp stays
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Answer question and I will give brainliest
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A laser source has a bandwidth of 30GHz (a) Calculate the coherence length of the source b) What is the time separation of secti
abruzzese [7]

Explanation:

It is given that,

Bandwidth of a laser source, f=30\ GHz=30\times 10^9\ Hz

(b) Let t is the time separation of sections of sections of the light wave that can still interfere. The time period is given by :

T=\dfrac{1}{f}

T=\dfrac{1}{30\times 10^9}

T=3.33\times 10^{-11}\ s

(a) Let h is the coherence length of the source. It is given by :

l=c\times T

c is the speed of light

l=3\times 10^8\times 3.33\times 10^{-11}

l = 0.0099 m

Hence, this is the required solution.

6 0
3 years ago
If we drop two iron balls, one ball is bigger than another one, from
loris [4]

Answer:

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Explanation:

7 0
3 years ago
How do you relate and explain a planet's distance from the Sun to things like the time of their year & their average tempare
anzhelika [568]
What we call a "year" is the time a body takes to complete one orbital revolution
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Everybody knows that if you want to get more warmth, then you have to stand closer
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The farther a planet's rotation axis is tilted from being perpendicular to the plane
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3 years ago
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