Answer:
Explanation:
Let the mass of tomato is m and the height from which it falls is h.
Let the tomato its the ground with velocity v.
The potential energy of the tomato at height h
U = m x g x h
The kinetic energy of tomato as it hits the ground
K = 1/2 mv^2
According to the question,
85.6 % of Potential energy = Kinetic energy
Answer:
Maximum Power = 144.3 D
The associated focal length of the lens =
Explanation:
According to the Lens maker's Formula:
where;
= the refractive index of the medium
and
= radius of curvature on each surface
For a convex lens, The radius of curvature in the front surface will be positive and that of the second surface will be negative . Therefore;
At maximum power
=
This Implies
Therefore; the power is given by the formula:
= 144.3 D