Light passes from air into water at an angle of incidence of 42.3°. Determine the angle of refraction in the water.

Explanation:

According to Snell’s Law we have the following:  

(1)  

Where:  

is the first medium index of refraction  (air)

is the second medium index of refraction  (water)

is the angle of the incident ray  

is the angle of the refracted ray  

So, we need to find  from (1):

(2)  

(3)

Finally:

This is the angle of refraction

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.