Recent content by metsjetsfan

and for part d, my problem is that the fundamental frequency for the original tuning fork would be 520 hz because that is half of the 1039 hz from part b. but then that means the wavelength= 340 m/s / 520 hz = .65 m. And then 1/4 of .65= .1625. I understand the shortcut for why it is 33/4 but...

so is the answer to part c 1559 then?

So my teacher is horrible, and I pretty much have to teach myself everything. With this question, I am getting different answers than my teacher, and my teacher has been unable to explain to me satisfactorily why and how she got her answers. So please help me out, and even give some kind of...

Oh no...my teacher didn't teach me any of that. She just gave us the equation f=uk * N. I had to guess with the rest by getting my own textbook... Thanks so much...you made everything clear with one sentence!

OOOOOOOOH, I understand now! So force between box 1 and 2 is: f=ma=1.3 * .798= 1 and force between box 2 and 3 is: f= (1.3+3.2) * .798 = 3.59 N IS THAT IT? Also, could you answer my second question involving frictional forces? Thanks a lot!

Homework Statement First question: A force of magnitude 7.5 N pushes three boxes with masses m1= 1.3 kg, m2=3.2 kg, and m3=4.9 kg. Find the contact force between a-boxes 1 and 2 b-boxes 2 and 3 There is a diagram, so I'll try to describe it...it's pretty simple. The boxes are just sitting...