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lions [1.4K]
3 years ago
7

Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 second

s. The markings on the post submerged in water indicate that the water level fluctuates from a trough at 6.0 meters to a crest at 9.0 meters. What is the period of the wave?
Physics
2 answers:
Debora [2.8K]3 years ago
4 0
<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>
AlexFokin [52]3 years ago
4 0
Period of wave is time takes wave to pass the fixed point.
you have been said that it's 4s, that's the answer 
T = 4s

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<h2>20 m/s²</h2>

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The acceleration of an object given it's mass and the force acting on it can be found by using the formula

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a =  \frac{2000}{100}  = 20 \\

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3 years ago
A disk of a radius 50 cm rotates at a constant rate of 100 rpm. What distance in meters will a point on the outside rim travel d
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A point on the outside rim will travel 157.2 meters during 30 seconds of rotation.

                         

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d = v*t

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v = \omega*r

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