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bezimeni [28]
3 years ago
11

What device produces light by running an electric current through a gas

Physics
1 answer:
Andrej [43]3 years ago
4 0

Answer:

fluorescent bulb

Explanation:

A fluorescent bulb is what produces light.

It produces light by passing electric current through a gas to

A fluorescent lamp, is a low-pressure mercury vapor and a gas-discharge lamp that uses fluorescence to produce visible light. like the ones we see.  An electric current in the gas excites mercury vapor, and that produces a short wave ultraviolet light and well that causes a phosphor coating on the inside of the lamp to glow. i tried making this sound as simple as possible.

i hope this really helps you !! thanks this and mark this as brainliest !!!

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The faintest sound an ear can hear (20 micro-pascals) is roughly ______ times smaller than atmospheric pressure at sea level.
gtnhenbr [62]

Answer: 5.06\times10^{9}

At sea level, there is one standard atmospheric pressure which is equal to 101.325 kilopascals.

The pressure of faintest sound that a human ear can hear is 20 micro-pascals.

taking the ratio of two:

\frac {101.325 kilopascals. }{20 micropascals} = \frac {101.325 \times 10^{3}Pa}{20 \times 10^{-6}Pa}

=5.06\times10^{9}

Hence, the atmospheric pressure at sea level is 5.06\times10^{9} times greater than the faintest sound that a human ear can hear.



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Answer: option 1 : the electric potential will decrease with an increase in y

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V = k/y

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This implies that an increase in distance results to a decreasing potential and a decrease in distance results to an increase in potential.

This fact makes option 1 the correct answer

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