Answer:
Explanation:
a )
Refractive index of ice = sini / sin r where i is angle of incidence and r is angle of refraction
angle of incidence = 90 - 45 = 45
angle of refraction = 30
refractive index of ice μ = sin 45 / sin 30
= 2/ √2
μ = √2 = 1.414
μ = 1 / sin C where C is critical angle for ice - air interface
sinC = 1 / μ
= 1 / 1.414
= .70
C = 44 .42° .
b )
real depth / apparent depth = refractive index
2 / apparent depth = 1.414
apparent depth = 2 / 1.414
= 1.414 cm .
The two will fall at the same speed and reach the surface at the same time. This is because the two will experience the same gravitational acceleration on the moon. However, on the earth surface the two will land on the surface of the earth at the same time due to air resistance such that the egg will experience a higher air resistance than the hammer. On, the moon, where there is no noticeable atmosphere there is no air resistance on either object and both fall at the same speed. It is also important to note that their mass doesn't affect their speed.
2 meters per second= speed
Using the equation KE=1/2mv^2, plug in the numbers and solve for KE