Corrosion is the irreversible damage or destruction of living tissue or material due to a chemical or electrochemical reaction.
The first one, as the mass is higher so it accelerates more
Answer:
= 2.33
Explanation:
.According to snell's law:
n1sin i = n2sin r ,
where n1 is refractive index of the medium in which incident ray is travelling, n2 is the refractive index of the medium in which refracted ray is travelling,
i is angle of incidence,
r is angle of refraction.
Given that,
n1 = 1,
i = 51 degrees,
r = 19.5 degrees. ,
n2= ?
So,
1*sin 51 = n2 sin 19.5
=> n2 = sin51 / sin19.5
= 2.33
They will hit the ground at the same time, as mass is negligible when calculating the acceleration of gravity when there is no air resistance
