Dandysaurus
Badges: 10
Rep:
?
#1
Report Thread starter 2 years ago
#1
Could someone explain to me how to answer these questions please?
1) A loudspeaker points directly at a wall 3m away and emits a note of frequency 680Hz. A standing wave is formed. If the speed of sound is 340m/s, what will be the separation between minimum intensities (nodes)?

2) A steady note of frequency 850Hz from a works siren is heard by two people standing in an open field. One is 4.0m nearer to the siren than the other. If the speed of sound in air is 340m/s, what is the path difference in metres between the waves reaching the two workers? How many wavelengths is this?

3) Organ pipes can produce very low notes. About how long would a stopped organ pipe closed at one end have to be to produce a note of 30Hz? (Speed of sound 340m/s)

Thank you!
0
reply
uberteknik
  • Study Helper
Badges: 21
Rep:
?
#2
Report 2 years ago
#2
Duplicate thread.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

University open days

  • The University of Law
    The Bar Series: Applications and Interviews - London Bloomsbury campus Postgraduate
    Thu, 17 Oct '19
  • Cardiff Metropolitan University
    Undergraduate Open Day - Llandaff Campus Undergraduate
    Sat, 19 Oct '19
  • Coventry University
    Undergraduate Open Day Undergraduate
    Sat, 19 Oct '19

How has the start of this academic year been for you?

Loving it - gonna be a great year (142)
17.95%
It's just nice to be back! (213)
26.93%
Not great so far... (283)
35.78%
I want to drop out! (153)
19.34%

Watched Threads

View All