Frequency of a pressure vs time chart

AI Thread Summary
The discussion focuses on determining the frequency and wavelength from a pressure versus time chart of a sound wave. To find the wavelength, one participant suggests calculating the period of the wave, which can then be used to derive the frequency using the formula frequency = speed / wavelength, with the speed of sound given as 343 m/s. The graph does not resemble sine or cosine functions, indicating it is a wavelength graph rather than a typical wave function. Participants emphasize the importance of identifying the period to facilitate these calculations. Understanding these concepts is crucial for accurately interpreting the graph.
emc2566
Messages
2
Reaction score
0
1. What is the frequency and wavelength of the sound wave that produced the graph?



2. How would you find the wavelength of the graph?



3. I used speed = wavelength x frequency, changed it into frequency = speed / wavelength, used 343 m/s as the speed. I'm just stuck on how to get the wavelength. The units used in the graph are pascals and seconds.
 
Physics news on Phys.org
Welcome to PF.

Does the graph resemble a sine or cosine function? Try finding the period, from that you can calculate the frequency.
 
It's a wavelength graph. No sine or cosine functions, no triangles.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...

Similar threads

Replies
9
Views
4K
Replies
10
Views
1K
Replies
6
Views
1K
Replies
6
Views
3K
Replies
3
Views
271
Replies
3
Views
2K
Back
Top