Answer:
Explanation:
1) The moment of inertia of the grindstone is:
c
Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of kinetic energy, which is less than the initial amount of potential energy.
remember the law of energy there cannot be any more since it is using the potential energy to move
Exercising and eating right
You need to use snell’s law in this problem. N1sin (theta) = n2sim (theta)
N1 = index of oil
N2 = index of glass
If you already have the numbers, include it in this
equation:
N1.sin (90deg) = N2.sin (critical angle) (note sine (90deg)
= 1)