What frequency of sound traveling in air at 11 oC has a wavelength of 4 m?
From what I can come up with... the frequency of sound at 20C is 344 m/s and at -20C is 320 m/s. From this I interpolated and got at 10C it is 332 m/s and then kinda guessing at 11C it is 333.2 m/s.
333.2 / 4 m =...
The total mass of helium in a balloon is 199 kg. What is the volume of the balloon? Enter only the numeric portion of the answer, not the units.
That is the problem. I am having trouble locating a simple forumla for this. All I can seem to find involve having the radius of the balloon which...