2 years ago

A 20 packet box of detergent sells for $5.49. What is the unit rate

Mathematics

1 answer:

jolli1 [7]2 years ago

6 0

Answer:$0.27

Step-by-step explanation:

20=$5.49

1=20/5.49

1=$0.2745

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A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5

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Additional information to complete the question:

How long does it take for a short pulse of light to travel from one end of the glass to the other?

Express your answer in terms of some or all of the variables f and L. Use the numeric value given for n in the introduction.

T = ___________ s

Answer:

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Step-by-step explanation:

Given:

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Frequency = f

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λ(glass) = λ(air) / n

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= $\frac{L}{10} * \frac{1}{1.5}$

= $\frac{L}{15}$

V(glass) = fλ(glass)

$= f * \frac{L}{15}$

$T = \frac{L}{V_{glass}} = \frac{15}{f}$

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Mom has ⅘ quart of strawberries. She needs to fill ¼-quart jars. How many jars will she be able to fill?

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