Adiver shines a flashlight upward from beneath the water (n = 1.33) at a 32.7° angle to the vertical. at what angle does the light leave the water?

45.93°

Explanation:

The angle of incidence is given as 32.7°

The refractive index of the water that is

Refractive index of the air that is (because the refractive index of air is 1 )

We have to find the angle at which the light leave the water means angle of refraction

So according to snell's law

r =45.93°

So the light leave the water at an angle of 45.93°

temp rises, and expansion

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27