It is very difficult for an atom to accept a proton. It can only be done under very special circumstances. So A and C are both incorrect. I don't see how D is possible. The atom does lose 1 electron, but how it gets 21 is think air.
The answer is B which is exactly what happens.
It is strong enough to penetrate through flesh but not bone so we can see if there are fractures or breaks in our skeleton
Explanation:
its hard to explain its very complex but its so they can function properly
If he feels like, is interested in it, and is able to grasp it, then why not ? Why not indeed ?
Answer:
It will emerge at its initial speed not a slower speed.
Explanation:
It will emerge at the initial speed because the medium at the point of emergence is the same as the medium before incidence.
Light moves at a constant speed in any particular medium. Hence, the speed of light in air is constant in air and the speed of light in glass is constant in glass.
