Recent content by Fizz_Geek

Homework Statement A particle travels from point A to point B following a semicircular path (a half-circle) of radius 5 m, and it travels at a constant speed of 1 m/s. Find the average acceleration of the particle. Homework Equations Average acceleration = change in velocity/ change...

Oops, should have checked the date before replying.

You used the diameter of the sprocket where you needed the radius. Using your equations, I'm getting for part a: F = 847 N

Oh! Okay, thanks for all your help!

Actually, that formula is in my intro book. But how would I use it here? I don't have the value of n.

Oh! Thanks very much for your time!

That's what I was trying to do, but my calculator died, so I was using the graphing calculator app on my phone. Did you get c = 3.577e4 ? Then W = - 19 kJ ? If not, can you just tell me if the method is correct or not? Did I use the right value of gamma and the right equations? Thanks again!

Homework Statement An ideal diatomic gas, with rotation but no oscillation, undergoes an adiabatic compression. Its initial pressure and volume are 1.9 atm and 0.30 m3. It's final pressure is 2.9 atm. How much work is done by the gas? P0 = 1.9 atm = 1.93e5 Pa V0 = 0.30 m3 P = 2.9 atm =...

Oh, I got it! You wouldn't happen to know any good resources with examples on this elementary matrix method, would you? I really appreciate your help, thank you very much!

So I did what you asked, and I multipled on the right and left by E1,1. This gives the desired matrix. And I know this matrix is an element of I because I is an ideal and absorbs products. The train of thought I was following started out the same, but I was trying to modify the given matrix...

Question: Find a noncommutative ring R with unity, with maximal ideal I such that R/I is not a field. Attempt at a solution: Let R = the set of all 2x2 matrices with integer entries. Let I = the set of all 2x2 matrices with even integer entries. I'm having trouble proving that I is...

To hunt_mat: That's a very nice trick! I got stuck on the next step, integrating (r')2, but I'll try to work that out with my friend before asking again. Thanks very much!

How's does multiplying by a derivative give me an integral?

Homework Statement r" = 1/r^2 Homework Equations A friend gave this to me, he was just wondering how we'd approach it. The Attempt at a Solution I don't think the equation is linear, so I don't know how to approach it. My friend suggested integrating both sides with respect to r...

Thanks for the reply! I thought to do something like that, and I can understand that both series would converge, but how would they be equal?