Recent content by nrm

I was hoping that somebody would check my work. Any input is appreciated. A decay rate of a radioactive sample is being measured using a Geiger counter. During a 10 second measurement 100 decays are registered. what is the error associated with the result? \sigma_{y} =...

What have you tried so far?

Partial with respect to x: 1152x(y^2)-6144(x^3)(y^2)-128x(y^4) y 1152(x^2)y-3072(x^4)y-256(x^2)(y^3)

Question: [ A rectangular box, whose edges are parallel to the coordinate axes, is inscribed in the ellipsoid 96x^2 + 4y^2 + 4z^2 = 36, What is the greatest possible volume for such a box ] I realize that the volume of the box: V = (2x)(2y)(2z) = 8xyz Thus far I've solved for z^2 in the...

for the log question I would say consider the log and the person as one complete system. Consider the net force on this combined system and how this relates to the center of mass of this system. If there is no net force, what does this say about the motion of the center of mass?

Thanks to both of you for replying. I've got it all worked out.

I was hoping that I could find help solving this problem. I've been working on it for a while and haven't been able to solve it correctly. So far I have: \frac{dQ}{dt} = r - \frac{rQ}{100} Where Q is the amount of salt, r is the rate in and out. I think that this may work for the...