Answer:
The angle of inclination of the rider to the vertical is 32.5⁰.
Explanation:
Given;
linear speed of the motor cycle, v = 90 km/hr = 25 m/s
radius of the circle, r = 100 m
The angle of inclination of the rider to the vertical is calculated using banking angle formula;

Therefore, the angle of inclination of the rider to the vertical is 32.5⁰
Answer:

Explanation:
As we know that there is no external torque on the system of two disc
then the angular momentum of the system will remains conserved
So we will have

now we have

also we have

now from above equation we have

now we have


Answer:
Explanation:
Solution is in the picture attached
Answer:
The mirror is opaque while the lens is transparent
Explanation:
The lens is transparent throughout (lets light pass through), while the mirror reflects light. You are basically asking for the difference between a lens and a mirror
But how about the the behaviors of the convex mirror and convex lens? The convex lens will let light pass through and focus it on the other side of it. If you stand on one side of the lens, you can see what is on the other side of it. Think about a camera lens that's just curved!The convex mirror will reflect the light on the same side of it you'll basically will just see yourself but you'll look funny.
Answer:
northen henisphere,southern hemisphere, Eastern hemisphere, Western hemisphere.