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Tanzania [10]
3 years ago
13

Approximately how old is the earth?

Physics
1 answer:
Wewaii [24]3 years ago
6 0
<span>C) 4.5 billion years old</span>
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The visible color of light with the highest frequency is? question 31 options:
chubhunter [2.5K]

The visible color of light with the highest frequency is blue.

<h3>What is visible light?</h3>

The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view.

<h3>Arrangement of visible color of light in increasing order of frequency</h3>

Visible color of light can be arranged in order of increasing frequency as follows;

  • red
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  • blue
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Thus, the visible color of light with the highest frequency is blue.

Learn more about visible light here: brainly.com/question/28110014

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2 years ago
Sound waves in air are a series of
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Sound waves in air are a series of <span>periodic disturbances, </span><span>periodic condensations and rarefactions,</span><span> and high- and low-pressure regions. It is all of the above. The answer is letter D.</span>
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3 years ago
A glass plate (n = 1.60) is covered with a thin, uniform layer of oil (n = 1.29). A light beam of variable wavelength from air i
frez [133]

Answer:

The thickness of the oil film is 198 nm.

Explanation:

Given that,

Refractive index of glass plate = 1.60

Refractive index of oil = 1.29

Wavelength = 511 nm

We need to calculate the thickness of the oil film

Using formula of path difference

2nt=k\lambda

t=\dfrac{k\times\lambda}{2n}

Where, n = refractive index

t = thickness

\lambda = wavelength

Put the value into the formula

t=\dfrac{1\times511\times10^{-9}}{2\times1.29}

t=198\times10^{-9}\ m

t= 198\ nm

Hence, The thickness of the oil film is 198 nm.

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In the attachment there is a density column where there is colour
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Electromagnetic waves are?
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physics, electromagnetic radiation refers to the waves of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays.

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