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Rus_ich [418]
3 years ago
11

What causes interstellar dust and gas to start to contract and form a protostar?

Physics
2 answers:
Natalija [7]3 years ago
8 0
The shockwave from a supernova
oee [108]3 years ago
6 0
I’m pretty sure the answer is 3
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A circuit is set up such that it has a current of 8 A. What would be the new current if the resistance was increased by a factor
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Answer:

4 A

Explanation:

The relationship between current, voltage and resistance in a circuit is given by Ohm's law:

V=RI

where

V is the voltage

R is the resistance

I is the current

The equation can also be rewritten as

I=\frac{V}{R}

from which we see that the current is inversely proportional to the resistance, R.

In this problem, the initial current is I = 8 A. Then the resistance is doubled:

R ' = 2R

So the new current is

I'=\frac{V}{R'}=\frac{V}{2R}=\frac{1}{2}(\frac{V}{R})=\frac{I}{2}=4 A

so the current is halved.

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Explanation:

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