Calculate Speed and Time of Longitudinal Wave in 6m Spring

[jaron]

Homework Statement

a longitudinal wave in a 6.0m long spring has a frequency of 10.0 Hz and a wavelength of 0.75m. calculate the speed of the wave and the time that it would take to travel the length of the spring.

Homework Equations

v = f (wavelength)

The Attempt at a Solution

v = 10(0.75)
v = 7.5 m/s

then in order to find the time it would take to travel the length of the spring i have no idea.

any help is always appreciated

 

[cepheid]

It travels at 7.5 m/s. The spring is 6.0 m long. So how long does it take to traverse the spring?

Here's an equivalent question: you are driving a car at 75 km/h. How long does it take you to drive 60 km?

 

[jaron]

ah yes. so we are back to the old t = d/v

that makes very good sense. thank you.