The answer to this question is A.
Air resistance, also called drag, acts upon a falling body by slowing the body down to thr point where it stops accelerating, and it falls at a constant speed, known as the terminal volocity of a falling object. Air resistance depends on the cross sectional area of the object, which is why the effect of air resistance on a large flat surfaced object is much greater than on a small, streamlined object.
It tells us the number of protons that are present in the nucleus, the positively charged region of that atom.
Answer:
Transmission of telephone signals
Explanation:
Fiber optics are used for the transmission of telephone signals.
