You are Here: Home >< Physics

# AS Physics Waves Exam Question - please explain how I do it watch

Announcements

How do I do this question: b)iii) Calculate the difference in the value for the speed of sound between day one and day two obtained from these results.

I'm guessing the 80m at the start of the question is significant, but I don't know whether 80m is the wavelength, or 80m is half a wavelength, or two wavelengths. Can you explain it to me please? Also, how do I do it? I don't know the frequency, so I can't work out the speed.
2. (Original post by vector12)

How do I do this question: b)iii) Calculate the difference in the value for the speed of sound between day one and day two obtained from these results.

I'm guessing the 80m at the start of the question is significant, but I don't know whether 80m is the wavelength, or 80m is half a wavelength, or two wavelengths. Can you explain it to me please? Also, how do I do it? I don't know the frequency, so I can't work out the speed.
Speed=distance/time

The distance is 80m, the time is given in the table.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: November 5, 2017
Today on TSR

### Moving into halls?

How do unis decide who goes where?

### University open days

• University of Lincoln
Wed, 12 Dec '18
• Bournemouth University
Midwifery Open Day at Portsmouth Campus Undergraduate
Wed, 12 Dec '18
• Buckinghamshire New University