At the boundary between air and glass, we can see mainly refraction ...
the path of the light bends as it crosses the boundary, and proceeds
from there in a different direction.
If we're very careful and make sensitive measurements, then we can also
detect transmission, some reflection, and a tiny bit of dispersion at the boundary.
Answer:
v₂ = 17.98 m/s
Explanation:
given,
mass of ball = m = 4.6 Kg
length of string = L = 6.6 m
force acting toward the center is equal to the force exerted by centripetal acceleration
now, calculating the speed of ball at the bottom of the circlr
work done by the gravity = change in kinetic energy
v₂ = 17.98 m/s
This aint even a question