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Fittoniya [83]
3 years ago
5

A sinusoidal wave travels along a string. if the time for a particular point to move from maximum displacement to zero displacem

ent is 0.17 sec, what are the period and frequency? if the wavelength is 1.4 m what is the velocity?
Physics
1 answer:
Lisa [10]3 years ago
7 0
The time it takes for a point to reach 0 displacement from maximum displacement is \frac{\pi}{2} of a cycle. Thus, one period (2\pi) will take T=0.17*4=0.68s.

The frequency is simply f=\frac{1}{T}=\frac{1}{0.68}=1.47Hz.

The speed is given by: v=f\lambda=1.47*1.4 = 2.06m/s
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\large{ \tt{☄ \: EXPLANATION}} :

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\large{ \tt{♨ \:LET'S \: START}} :

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\large{ \boxed{ \tt{❁ \: ACCELERATION \: (a) =  \frac{FINAL \: VELOCITY(v) - INITIAL \: VELOCITY(u)}{TIME \: TAKEN \: ( \: t \: )}}}}

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\large{ \bf{↬a =  \frac{60 - 0}{300}  =  \frac{60}{300} =  \boxed{ \bold{ \bf{0.2 \: m {s}^{ - 2} }}} }}

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\large{ \tt{۵ \: AGAIN, \: USING\: SECOND \: EQUATION \: OF \: MOTION}} :

\boxed{ \large{ \bf{✾ \: s =  \frac{u + v}{2}  \times t}}}

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\large{ \bf{↦s =  \frac{0 + 60}{2}  \times 300 =  \boxed{ \bold{ \bf{9000 \: m}}}}}

  • The distance covered by the jeep is 9000 m .

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