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2 years ago

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A school's new pump can fill the swimming pool in 2 hours, and the old pump takes 5 hours. What is the time required in hours to

fill the pool if both pumps are used together? (Enter your answer as mixed number.)

1 answer:

Vilka [71]2 years ago

6 0

.41 hours. 2/24 • 5/24 =10/24 then 10/24= .41 hours or 24.6 minutes

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Answer:

The possible thickness of the soap bubble = $1.034\times 10^{-7}\ m.$

Explanation:

<u>Given:</u>

Refractive index of the soap bubble, $\mu=1.33.$
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$2\mu t=\left ( m+\dfrac 12 \right )\lambda.$

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$2\mu t=\left (0+\dfrac 12\right )\lambda\\t=\dfrac{\lambda}{4\mu}\\\ \ = \dfrac{550\times 10^{-9}}{4\times 1.33}\\\ \ = 1.034\times 10^{-7}\ m.$

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