Recent content by Drake M

I meant to thank you all for your help sooner but i got caught up in test and mid-terms. Thanks!

Homework Statement I'm having a hard time differentiating when to use log instead of ln, vice versa. Are there any general rules to follow? For example I have to evaluate 4u^-3 + u^-1. Homework Equations f'(1/u) = log u f'(1/u) = ln u The Attempt at a Solution I put -2u^-2 + log(u) but the...

Thanks for the help guys, a buddy of mine solved it and showed me how. I wasnt simplifying x-5/2 into 2x-5 and x--3/2 into 2x+5 before is subbed in my vertex values and that's where I went wrong

isnt optimal value max value of y which would be the vertex

[Note: Thread moved to this forum by a mentor] Hi all, the full question is: A parabola has zeroes at 5/2 and -3/2 and has an optimal value of 4. Determine equation of the parabola in factored form. So I started out with 4 as my y-value on my vertex then took the zeroes(5/2 and -3/2), added...

Yeah Ill try to look further into it

Whoops...a would equal 1.5m/s/s. So now that I have acceleration. would I just multiply it by the mass of the 50kg cart?

Yes i have paraphrased it because it was c) of a question. To find acceleration would I combine the masses of the carts since theyre in contact? If I did then it would be FNET=sigmaF FNET=120N FNET=ma a=m/FNET =80kg/120 .666m/s/s.

Homework Statement Determine the force acting on a 30kg cart by a 50kg cart if the 30kg cart is pushed into the 50kg cart with a force of 120N. m1=30kg m2=50kg Fa=120N Homework Equations FNET=ma FNET=sigmaF The Attempt at a Solution Im really confused on where to start here. I was thinking of...

Thanks

Basically what I'm asking is why doesn't mass affect energy loss

No, we haven't learned that in class so we wouldn't be allowed to use it as a reason on a test or lab. I am just trying to think of a reasonable explanation as to why. I did the experiment but there didn't seem to be correlation between the two variables.

Homework Statement I am wondering how the mass of a ball affects the percentage of energy loss when the ball bounces. Homework Equations Ep=mgh eff=eout/ein x 100% The Attempt at a Solution 1)I don't think it affects them because if the ball is heavier but still made of the same material it...

I am wondering how the mass of a ball affects the percentage of energy loss when the ball bounces 1)I don't think it affects them because if the ball is heavier but still made of the same material it has the same elasticity and density only mass has changed. But if all of the starting Ep goes...

Homework Statement Another question regarding pool. I need to know how much force applied is given from the cue to the ball as well as force of friction OF CUE: a=56.55m/s2 vi=0m/s vf=3.28m/s d=.0953m m=.55kg BALL: m=.17kg *not sure whether to use distance traveled during contact or of the...