Index of refraction can be calculated using the following formula:

where
in a vacuum and "n" is the index of refraction. So we must calculate our velocity by manipulating the index of refraction formula and isolate v and so:

We could go one by one and calculate the velocity or use logic. If you divide by a larger number the output will be a smaller number. Therefore, the answer would be n=1.62 is the slowest.

By that logic when n=1 light would travel the fastest of these four scenarios. The key thing to understand about these problems is that the speed of light slows down as it goes through a medium, in a vacuum it's 3 x 10^ 8 m/s but as it goes through say air or water light slows down.
Answer:
what are the answers to select? or do you just say them
Explanation:
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<h2>
Answer:</h2>
The earth behaves as a magnetic dipole. Therefore a freely suspended magnet always points towards in the north-south direction because the north pole of the suspended magnet attracts the south pole of the earth's magnet which is the geographical north pole of the earth.
<em>hope</em><em> </em><em>this</em><em> </em><em>help</em><em>!</em>
Answer:
Green part of the visible spectrum.
X ray part of the electromagnetic spectrum.
Infrared part of the electromagnetic spectrum.
Explanation:
Wien's displacement law

Where, b = Wien's displacement constant = 2.898×10⁻³ mK
T = Temperature in kelvin

So, the wavelength would be of around the green part of the visible spectrum.

So, the wavelength would be of around the X ray part of the electromagnetic spectrum.
Human body temperature = 37°C = 37+273.15 = 310.15 K

So, the wavelength would be of around the Infrared part of the electromagnetic spectrum.
Answer:
B.she cannot use it because the credit card is not collareral
Explanation:
sorry if am wrong