Recent content by 40856

Ok I see your point. Doing it that way, I come up with speed of sound at 11C = 338.6. 338.6/4m = 84.65

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 =...

Helium = 0.179 so maybe I can take 199kg times .179 and that 35.621 kg is this correct?

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 formula for this. All I can seem to find involve having the radius of the balloon which...

Work on the way!