Answer:
n = 1.49
Explanation:
Given that,
Angle of incidence = 30 degrees
Angle of refraction = 19.5 degrees
We need to find the refractive index of the honey. Using Snell's law, we can find it as follows :
So, the refractive index of honey is 1.49.
Did you forget to add the picture or is this a free point
Answer:
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Answer:
Explanation:
As we know that disc can be treated as sheet of uniform charge density if the electric field is to be calculated at a point near its surface
so we can say that here electric field between two opposite charged disc is given as
so we have
here we know that
now we have
Answer:
Position of x at t = 1.44s is - 0.0817 m
Explanation:
For the harmonic motion of the spring, the displacement is given by
x = A cos wt
A is the amplitude of displacement = 0.14 m
t = time = 1.44 s
w = angular frequency and for a spring's motion, it is given by
w = √(k/m)
k = spring's stiffness = 6.5 N/m
m = 2.8 kg
w = √(6.5/2.8) = 1.524 rad/s
x = 0.14 cos (1.524 × 1.44) = 0.14 cos 2.194 = 0.14 × - 0.5836 = - 0.0817 m