3 years ago

Which of the following cannot vary?

1 answer:

3 0

The answer is B. the speed of light in a vacuum. The speed of light in a vacuum cannot vary because there are no extraneous forces to act upon the light waves inside of the vacuum.

Hope this helps!

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A doctor takes an x-ray of your body this is an example of conduction, convection, radiation?

oksano4ka [1.4K]

Answer:

<h2>Radiation</h2>

Explanation:

An x-ray emits radiation to see through the outer part of your body.

Hope this helps! <3

4 0

3 years ago

Using the sample in question 3 how many counts per second would be observed when the detector is 19 meters away from the sample

lara [203]

Okay. I'm willing to do that. But first you'll have to tell me something about the sample in question 3.

6 0

3 years ago

What visible wavelengths of light are strongly reflected from a 390-nm-thick soap bubble?

DiKsa [7]

Answer:

So visible wavelength which is possible here is

416 nm and 693.3 nm

Explanation:

As we know that for normal incidence of light the path difference of the reflected ray is given as

$2\mu t + \frac{\lambda}{2} = \Delta x$

so here we can say that for maximum intensity condition we will have

$\Delta x = N\lambda$

so we have

$2\mu t + \frac{\lambda}{2} = N\lambda$

now for visible wavelength we have

for N = 1

$2\mu t = \frac{\lambda}{2}$

$\lambda = 4\mu t$

$\lambda = 4(\frac{4}{3})(390 nm)$

$\lambda = 2080 nm$

for N = 2

$\lambda = \frac{4\mu t}{3}$

$\lambda = \frac{4(\frac{4}{3})(390 nm)}{3}$

$\lambda = 693.3 nm$

for N = 3

$\lambda = \frac{4\mu t}{5}$

$\lambda = \frac{4(\frac{4}{3})(390 nm)}{5}$

$\lambda = 416 nm$

6 0

4 years ago

PLEASE HELP

kogti [31]

Answer:

C. nuclear to electrical

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3 years ago

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Which sediments typically make up the C horizon?

Nastasia [14]

B) sand, silt, and clay!

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4 years ago

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