Recent content by Scarlitt14

Pretty much at the beginning, I'm not even entirely sure how to approach the identity.

The attachment is there now, and no, it's not a homework question. I'm just trying to understand the involution and I wasn't sure where to post it as I haven't been on here in YEARS. Apologies if it is in the incorrect location.

Smoker Non-smoker Disease A B No disease C D Show the mathematical relationship between Relative Risk and Difference in Conditional Proportions. (Work the formulas algebraically so RR is on one side of the equation and the difference (plus some other...

Prove the Identity by Using a Sign Reversing Involution (See Attachment)

Since the angle is 90 between the two segments sin(90)=1 so I dropped that out, and the problem also asked for magnitude so I wasn't worried about the resultant vector from the cross product. You said that I lost and r somewhere? Does that mean that my final equation should end up as: F =...

Ok, so assuming that ds can be viewed as just s since the segment is so small and dB becomes just B; I got: B=(\mu0Is)/(4\pir^{3}) Where r=\sqrt{2R^{2}}=\sqrt{2} R And then to get the force the equation F=I\vec{l}x\vec{B} In this case l is the s mentioned above and that gives...

1. A circular loop of wire of radius R = 5.14 m lies in the xy-plane, centered about the origin. The loop is carrying a current of I = 6.91 A flowing in counterclockwise direction. Consider two l = 1.52 mm segments of the loop: one centered about the positive x-axis, the other centered about the...

A uniform disk of radius 0.2m and 5.6 kg mass has a small hole distance d from the disk's center that can serve as a pivot point. What should be the distance d so that this physical pendulum will have the shortest possible period? What will be the period at this distance? So, I know that the...

I used the mass density (M/L) in both my center of mass equations and the sum of forces. I'm able to find the acceleration for each piece of the chain, however, I cannot for the life of me figure out how to find the acceleration of the chain as a whole (acceleration of the center of mass I...

Ok, I think I understood the original problem correctly. Here is how I read it: \sqrt{x} + 1= -2\sqrt{x-3} First thing I would do is square the entire equation. Giving: (\sqrt{x} + 1)^{2} = 4(x-3) By using the foil method on the left side of the equation and distributing the 4 on the right...

Homework Statement Given: g=9.8 m/ss Given: A uniform flexible chain whose mass is 7 kg and length is 5 m. Given: A small frictionless pulley whose circumference is negligible compared to the length of the chain. Problem: Initially the chain is hung over the pulley with nearly equal...