Answer:
ocean covers 71 percent of the earth
<h3><u>Answer;</u></h3>
The period of the wave is <u><em>4 seconds</em></u>
<h3>
<em><u>Explanation;</u></em></h3>
- <em><u>The period of a wave or periodic time is the time taken for one complete oscillation to occur.</u></em> In this case, one complete oscillation occurs when the wave moves from one crest to the next or a trough to the next. <em><u>This takes 4 seconds. Therefore the period is 4 seconds.</u></em>
- <em><u>Frequency on the other hand is the number of oscillations by a wave in one second. Thus, f = 1/T, that is frequency is the reciprocal of periodic time.</u></em>
Answer:
Kinetic friction is lesser than limiting friction. Two surfaces are rubbed together, first with a smaller force and then with a greater force.
It's Endorphins. That's a pain killer produced by the brain.
Fundamental frequency, f1=v/2l
Let the length of the pipe be ‘l’
<em>By given: v=340m/s, f1=60Hz</em>
Thus, 60=340/2l
60=170/l
l=170/60=17/6=2.8333
<em><u>The length of the pipe is 17/3=2.8333m.</u></em>
