The beats are actually two new sounds.
Their frequencies are (the sum of the original two frequencies) and (the difference of the original two frequencies).
The existence of the beats is the result of the difference in the frequencies of the original two sounds. <em> (b)</em>
Uhh it is used to detirmine heat
Answer: B) The ability of steel to be shaped
if there is not a reaction
Answer:
Stronger and harder than either of the pure metals
Explanation:
