Light passes from a material a, which has an index of refraction of 4/3, into material b, which has an index of refraction of 5/4. if the angle of incidence is 30°, what is the angle of refraction? (a) 14.1° (b) 32.2° (c) 28.4° (d) 46.0° (e) 51.0°

(b) 32.2°

Explanation:

Using Snell's law as:

Where,  

 is the angle of incidence  ( 30.0° )

is the angle of refraction  ( ? )

is the refractive index of the refraction medium  (Material B, n=5 / 4)

is the refractive index of the incidence medium (Material A, n=4 / 3)

Hence,  

Angle of refraction = = 32.2°

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.