Answer and Explanation:
In optics, a CoC(Circle of Confusion) is defined the minimum cross section of a paraxial bundle of rays made by a lens which is sphero-cylindrical type and can be viewed as an optical spot, which do not converge perfectly at the focus while a point source is being imaged due to spherical aberration.
The Circle of Confusion is also referred to as circle of indistinctness or a blur spot
Yield strength of mild steel is given as

here we know that


now we can rearrange it as

here we know that



so maximum applied force will be F = 1.23 * 10^3 N
B work = gravitational potential energy
Answer:
9.1875 Joules
Explanation:
The kinetic energy of an object can be given by the equation
, in which <em>m</em> is the mass and <em>v</em> is the velocity. Plugging in the mass and velocity values into the equation, we get:
