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1. Graphing Wavelength vs Inverse freq. or Period

According to our lab manual, the graph of Wavelength vs Period : the slope should be the speed of sound. Well, I have a negative slope of -32.2 which is ridiculous, but I can't find out what I'm doing wrong. We had 5 tuning forks , say for instance, 512Hz...the inverse 1/f = 1/512= 0.00195 ...
2. Binary Stars mass calculation

Homework Statement Centauri A and Centauri B are binary stars with a separation of 3.45x10^12m and a period of 2.52x10^9s Assuming the two stars are equally massive (which is approximately the case), determine their mass. Homework Equations ( m1 + m2 ) P^2 = ( d1 + d2 )^3 = R^3...
3. Kepler's Laws homework

What worked? I've been trying to figure out how you went wrong for an hour...what did you change?

got it
5. Gravitational Force of Three Identical Masses

Homework Statement Three identical masses of 550 each are placed on the x axis. One mass is at X1= -10.0 , one is at the origin, and one is at X2= 43.0 . What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? G = 6.673 x 10-11...
6. A Bar Suspended by Two Wires

Homework Statement A nonuniform horizontal bar of mass m is supported by two massless wires against gravity. The left wire makes an angle (phi) with the horizontal, and the right wire makes an angle . The bar has length L. What is the position of the center of mass of the bar, measured as...
7. Point particles

Thanks Doc Al!
8. Point particles

nvm, I just used what they were asking me to use, I just assumed the program knew that m_1 was lighter than m_2 and I was assuming correctly.
9. Point particles

I have a homework question that is referring to a pivot rod with unequal masses. The spheres are small enough that they can be considered point particles. what exactly does this mean? I know how to solve the equation, but I'm assuming I can't use the I=2/5mr^2 to solve it. If the...
10. Problem 8.77 A Flea's Jump

ahh... 1/2kx^2 = 1/2mv^2 then plug into 1/2mv^2=mgh h= v^2/2g
11. Problem 8.77 A Flea's Jump

I'm trying to use hooke's law for the spring in the flea's legs. which would be F=kx F=(26N/m)(2x(for each leg)(0.0001m) I got a force of 0.0052 I thought of using PE=mgh, the only equation I know of that would give me the height. I'm sure it's...
12. Problem 8.77 A Flea's Jump

So you don't know the answer? I have plenty of work on my paper, but it's all chicken scratch.
13. Problem 8.77 A Flea's Jump

The resilin in the upper leg (coxa) of a flea has a force constant of about 26 N/m, and when the flea cocks its jumping legs, the resilin in each leg is stretched by approximately 0.10mm . Given that the flea has a mass of 0.55mg , and that two legs are used in a jump, estimate the maximum...