When a neutral atom<span> gains </span>electron<span>, creating an anion, the </span>atom's radius<span> increases.</span>
The first statement is true because s<span>peed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed has nothing to do with direction. On the other hand, velocity is a vector quantity because direction is needed for this. </span>
Answer:
The amplitude of a periodic variable is a measure of its change over a single period. There are various definitions of amplitude, which are all functions of the magnitude of the difference between the variable's extreme values. In older texts the phase is sometimes called the amplitude
if you mean amplitude
Explanation:
They are a relatively recent invention.
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