Recent content by mhmil

Thanks!

Homework Statement A certain dog whistle operates at 21.5 kHz, while another (brand X) operates at an unknown frequency. If neither whistle can be heard by humans when played separately, but a shrill whine of frequency 5000 Hz occurs when they are played simultaneously, estimate the...

Homework Statement String instrument (e.g. guitar) players can tune one string off of another - once you are happy with the tension (and resulting pitch) in one (lower) string, you put your finger down partway up the first string at the appropriate spot to make a higher pitch, one which...

Okay, still not understanding it I guess. How do I find the change in frequency? I have so far that 347.6/16.35 = 21.260 = λ1 337.4/16.35 = 20.640 = λ2 So the equation V=fλ comes out to 347.6=16.35*21.260 337.4=16.35*20.640 These work out obviously. I just don't understand how...

But how do I find V2=F2*λ if I don't know λ? Should I just select a wavelength at random? Like 1 meter? And how does V2/V1 = F2/F1 if the frequencies are the same? Strugging to understand how I can find the percentage change in the frequency. Thanks so much for helping me so far...

I'm new to this forum so if this is posted in the wrong place or I've formatted it incorrectly, I apologize and if you could put it in the right direction that was would great! Thanks for any help.

Homework Statement A marching band member tunes her flute indoors in a 26 oC room. She then goes outside to play on a chilly 4 oC day in January. What percent change does this cause in the frequency played by her flute?) Homework Equations v = f(Lambda) The Attempt at a Solution...

Homework Statement Your niece is working on a unique science fair project - a clock built around a small mass vibrating on a little spring. Her prototype version is working ok, but it's running too slow. Given your experience in this course, you suggest to her that a stiffer spring should...