Carbon disulfide (n = 1.63) is poured into a container made of sodium chloride (n = 1.54). what is the critical angle for total internal reflection of a light ray in the liquid when it is incident on the liquid-to-glass surface?

70.87°

Explanation:

The formula for the critical angle is:

Where,  

is the critical angle

is the refractive index of the refractive medium.

is the refractive index of the incident medium.

n₁ is the refractive index for Carbon disulfide which is 1.63 (incident medium)  

n₂ is the refractive index of sodium chloride which is 1.54 (refractive medium)

Applying in the formula as:

The critical angle is = sin⁻¹ 0.9448 = 70.87°

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)