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3 years ago

a. Of the three experiments that are used to confirm the Big Bang theory, which is the most interesting to you and why?

Physics

1 answer:

HACTEHA [7]3 years ago

6 0

Answer:

Explained

Explanation:

Big Bang happened about 13.7 billion years ago. It is most accepted theory of universe creation. Several experiments have confirmed the happening of big bang back then, in promising way. One of this experiment is the red shift experiment. A scientist named Edwin Hubble tried to study the spectrum of stars. He made a shocking revelation that universe is rushing outwards in all directions. Light travelling away registers on the red side. He observed that the distance stars showed red shift in accelerated manner. If the universe is accelerating that means, at one point it would have been smaller, in fact it was as small as an atom, some how it exploded and lead to formation of the expanding universe.

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A circuit in a radio receiver requires a current of at least 1.0 microamp in order to detect a signal. It is required to find the number of electrons passing through the circuit if it detects a signal which persists for 1.0 microseconds.

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$\begin{aligned}Q&=I\times t\\&=1.0\text{ }\mu\text{A}\times 1.0\text{ }\mu\text{s}\\&=1.0\times 10^{-6}\text{ }\mu\text{A}\times 1.0\times 10^{-6}\text{ }\mu\text{s}\\&=10^{-12} \text{ C}\end{aligned}$

The amount of charge in one electron is $e=1.6\times 10^{-19} \times{ C}$ , therefore the number of electrons passing through the circuit while carrying $10^{-12} \text{ C}$ amount of charge is,

$\begin{aligned}n&=\frac{Q}{e}\\&=\frac{10^{-12} \text{ C}}{1.6\times 10^{-19} \times{ C}}\\&=6.25\times 10^{6}\end{aligned}$

To know more about the number of electrons passing through the circuit, refer to:

brainly.com/question/13199730

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