Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    17
    ReputationRep:
    A sound generator produces 25 waves every 0.1 seconds. If the speed of sound is 330m/s find

    a) wavelength of the sound
    b) the period of the waves

    Ok, for a I got 1.32m.

    Wavelength=V/F =330/250 (I got this by using 25/0.1) giving me 1.32m

    b) I got stuck with the period.

    I thought I could work backwards.....

    Period (T) =1/F

    F= V/Wavelength

    F=330/1.32=250

    1/250= 4x10^-3 (0.004) 0.004 seconds

    Is this right?

    I lost my answer sheet
    Offline

    20
    ReputationRep:
    (Original post by apronedsamurai)
    A sound generator produces 25 waves every 0.1 seconds. If the speed of sound is 330m/s find

    a) wavelength of the sound
    b) the period of the waves

    Ok, for a I got 1.32m.

    Wavelength=V/F =330/250 (I got this by using 25/0.1) giving me 1.32m

    b) I got stuck with the period.

    I thought I could work backwards.....

    Period (T) =1/F

    F= V/Wavelength

    F=330/1.32=250

    1/250= 4x10^-3 (0.004) 0.004 seconds

    Is this right?

    I lost my answer sheet
    Yeah but you could have gone straight to 1/250 because you already knew f=250... you didn't *need* to reverse your earlier calculation - but if you want to as an exercise that's fine of course.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: November 4, 2015
Poll
Do I go to The Streets tomorrow night?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.