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2 years ago

Any clue on this one I know it’s not D

Physics

2 answers:

Amiraneli [1.4K]2 years ago

6 0

Answer: C liquids because sound travels fast underwater

Explanation:

The vacuum would make it hard to hear her up close yet alone far away

Density makes it harder to hear

Ex. If you have a ice cube campared it a cup of water and you blow on it the water will have move movement because there is more available space for movement as compared to a ice cube

And the last one is also incorrect

inessss [21]2 years ago

5 0

I think it is D because gas particles move the fastest but if not then it is A

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Amiraneli [1.4K]

Answer: D

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MMPI - 2

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3 years ago

What is the equivalent resistance of a circuit that contains four 75.0 resistors connected in parallel with a 100.0 V battery?

zhannawk [14.2K]

To get the total resistance in a parallel circuit, you need to remember that unlike in a series, you do not just merely add the resistances. You need to get the reciprocal first of each resistance and add them together.

$\frac{1}{R_{T}} = \frac{1}{R_{1}}+\frac{1}{R_{2}}+\frac{1}{R_{3}}... +\frac{1}{R_{n}}$

After adding them, you will get the reciprocal again and then compute for the value. The problem says that there are 4 resistors in the circuit that have a resistance of 75.

$\frac{1}{R_{T}} = \frac{1}{75}+\frac{1}{75}+\frac{1}{75}+\frac{1}{75}$

Add up the numerator and copy the denominator:

$\frac{1}{R_{T}} = \frac{4}{75}$

Then get the reciprocal to get the total resistance:

$R _{T} = \frac{75}{4} = 18.75$

The answer to your question then is A. 18.8.

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D.
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