I'm big boi confused.

A beam of light traveling in air enters a substance. If the angle of incidence is 35 ∘ and the angle of refraction is 25 ∘ , what is the index of refraction of the substance?

n1sin(theta)1=n2sin(theta)2 So would it be like 1.008*sin(35)=n2*sin(25)

Explanation:

Correct.  Air has an index of refraction of approximately 1, and the angle of incidence is 35°.  The substance has an unknown index of refraction n, and the angle of refraction is 25°.

1 sin 35° = n sin 25°

n = 1.36

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

the answer to this is proletariats.

hope this : )