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miv72 [106K]
3 years ago
14

Does Anyone Knows This Pliz Help Me?

Mathematics
1 answer:
Andrew [12]3 years ago
8 0

Answer:

#3) (4/3) pi r^3

(4/3) pi 4^3

(4/3) pi 64

volume = 21.333pi cm^3

#4) (4/3) pi r^3

(4/3) pi 14^3

(4/3) pi 2744

volume = 3658.666pi cm^3

Step-by-step explanation:

hmu for more info

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In a circuit, two resistors of 100 Ω and 80 Ω are connected in parallel. The parallel group is then connected in series with a 1
nordsb [41]

Answer:

Total Resistance = \frac{1300}{9} Ω  (or 144.44 Ω)

Step-by-step explanation:

If two resistors, with resistance x and y, are connected in parallel, their total resistance is given by the formula:

\frac{1}{Total}=\frac{1}{x}+\frac{1}{y}

If 2 resistors with resistance x and y and connected in series, their total resistance would be:

Total = x + y

<em>Now, the first part, 100 and 80 are in parallel, so according to formula it would be:</em>

<em>\frac{1}{Total}=\frac{1}{x}+\frac{1}{y}\\\frac{1}{Total}=\frac{1}{100}+\frac{1}{80}\\\frac{1}{Total}=\frac{9}{400}\\Total = \frac{400}{9}</em>

<em />

<em>Now, this is connected in series with 100, so the grand total would be:</em>

<em>Total Resistance of Circuit = \frac{400}{9}+100=\frac{1300}{9}</em>

<em />

This is the total resistance of the circuit.

4 0
3 years ago
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