Question

A wave pulse is created in a slinky. it takes 1.2 sec to travel the length of the slinky if the slinky is 8 meters long (1 wavelength) what is the speed of the wave

Answer 1

Answer: )

The speed of the wave = 6.64 m/s.

Explanation:

Wave: A wave is a disturbance which travels through a medium and transfer energy from one point to another without causing any permanent displacement of the medium itself.

The velocity of a wave (v) = λf. Equation 1

Where λ = wave length of the wave, f = frequency of the wave.

Given: λ = 8 m, and

f = 1/t where t = period.

t = 1.2 s

f = 1/1.2 = 0.83 hertz

Substituting these values into equation 1

v = 8 × 0.83

v = 6.64 m/s.

Therefore the speed of the wave = 6.64 m/s.

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