Hello,
I did a lab on the recrystallization of benzoic acid. My solvent was hot water and used charcoal to adsorb any color impurities. I am trying to figure out how I should write a reaction and a mechanism for this. Is there even a reaction and mechanism I can write for this?
Any...
Um, ok. I figured out how to do the first part. And I asked about this hours and hours ago. Why "Get over it"? Plus the problem did say the two transverse waves combine to a standing wave.
Actually bdrosd, I don't think it really confused me...I just needed to think about the scenario you illustrated. Well I hope I understood what you said!
I had some homework problems that were due this evening so now I can come back to this hmwk problem! Ok, I did the quadratic formula
I ended up getting 4.9t^2 +343t -2946.37 =0 I ended up getting t =7.735s.
bdrosd, your explanation of T up and T down made me more confused unfortunately. I...
I know you said you thought you were quite frank for part one,
but I couldn't get the correct answer. I understand that since there is a phase, then the nodes, etc. will not simply be 0,pi, etc. There will be a phase along with the node.
since we are looking for first antinode when x>0...
I meant (1/2)*g*t^2=d. I got the answer 361.54m from that not the one I wrote incorrectly:blushing:
I'm a bit tired so I apologize if what I type down doesn't make sense.
What I am trying to find the moment when the detecor begins detecting fork. So finding the time delay helps me find the...
I found the previous thread dealing with this problem. At first I thought I understood but I am a bit puzzled. There was the suggestion that I need to figure out the speed of fork had when it emitted the sound that arrived at the detector at t= 8.590s.
The hint was: "If the fork falls for T...
Homework Statement
Using a highly sensitive parabolic sound collector, Sara records the frequency of a tuning fork as it drops into the Grand Canyon. She drops the vibrating tuning fork form rest at t=0. She records a frequency of 1783.0Hz at t=8.590s. What is the natural frequency of the...
I worked on part two and got the correct time. I just didn't immediately understand what you were explaining for part two.
However I'm still working on part one.
yes I checked. 1 s = 1000ms. It is .332 s.
Well, I guess I calculated incorrectly because I ended up getting 120.9m instead of my previous answer. Now I looked at the speed of sound again, and some sites say 343m/s some say 340 m/s. Using 340m/s I get 120.9 m
but using 343m/s I get 122.08 m...
The thunder, lightning example kind of confused me. The example I'm reading talks about a time delay and echolocation. If I am interpreting the info correctly, then the sound of the bar striking the ground in the aluminum bar is .332s after the sound of the bar strking the ground in the air. So...
denverdoc, now that I clarified the transverse wave equations, is the 2.6x=pi-1 not matter anymore? Can I apply this to find the node and therefore antinode?
also for the second part for the time. What about the x in the equation? I've read the info you linked to, but I don't see how it applies...
HallsofIvy, I thought maybe the problem involved something more, that's why I brought up open and closed air columns.
I looked online and found the speed of sound for aluminum rod is 5100m/s
so I just tried
x/340 - x/5100=.332
x(1/340 -1/5100)=.332
x= .332/[(1/340)-(1/5100)= 117.3 m...