'Frequency' is a word that often confuses some people ... for no good reason.
It just means "frequent-ness" or "often-ness" ... how often something happens.
The SI unit of frequency is the Hertz (Hz). Hz means 'per second'.
So " 13 Hz " means 13 per second.
Here are examples of frequency:
-- 780 kilohertz (on your AM radio dial)
-- 98.7 Megahertz (on your FM dial)
-- 5.8 Gigahertz
-- twice a day
-- three per week
-- every 6 months
A is the answer do ur this question
Mechanical waves transfer energy<span> by inducing vibrations in a medium. </span>A mechanical wave requires an initial energy input. Once this initial energy is added, the wave travels through the medium until all the energy is transferred.
If .45y = 65
Then solving for y would give you: <span>y = 144</span>
