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3 years ago

The sine of the incident angle is 0.217; the sine of the refracted angle is 0.173. calculate the index of refraction.

2 answers:

5 0

This can be solve using snell's law. snell's law equation is :

N1 / N2 = sin a2 / sin a1
where N1 is the index of refraction of the air which is equal to 1
N2 is the index of refraction of the medium
a2 is the angle of refraction
a1 is the incident angle

subsitute the given values
1 / N2 = 0.173 / 0.217
N2 = 1 ( 0.217 / 0.173)
N2 = 1.25 is the index of refraction

Olenka [21]3 years ago

5 0

The sine of the incident angle is 0.217; the sine of the refracted angle is 0.173. calculate the index of refraction.

n = 1.25

78% sure

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b) Now, according to the Conservation of Energy Law, the total initial energy is equal to the total final energy:

$E_{i}=E_{f}$

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$K_{i}=5400000 J$ is the train's initial kinetic energy

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Rewriting the equation with the given values:

$5400000 J=(12000 kg)(9.8 m/s^{2})h$

Finding $h$ :

$h=45.918 m \approx 45.92 m$

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