So I want to subtract the two surfaces, right? I really don't know where to start... I am guessing this would be some sort of triple integral, however I am very confused with the bounds.
Any help would be greatly appreciated!
Thanks!!
Oh that's a typo (sorry I don't know proper Latex yet), I meant to cancel all the m's, but did so in the next step:
(v)^2 + (1/2)(v)^2 = (vf1)^2 + (1/2)(vf2)^2
(3/2)v^2 = (vf1)^2 + (1/2)(vf2)^2
Oh my goodness - I think I overthought this problem and lost track of what I was effectively doing. Thank you for your patience and help! So if I substitute for vf2 instead...
(v)^2 + (1/2)(m)(v)^2 = (vf1)^2 + (1/2)(m)(vf2)^2
(3/2)v^2 = (vf1)^2 + (1/2)(vf2)^2
mv = 2m(vf1) + m(vf2)
v = 2(vf1)...
Ah yep! forgot about that:
I assumed that the initial momentum was 3mv because the momentum of the 2m mass is 2mv and the momentum of the m mass is mv, so the total initial momentum would be 2mv+mv = 3mv. Where am I going wrong?
Thanks!
I know I need to look at the conversation of momentum, as well as the conservation of kinetic energy. However I get stuck with my equations. Any help would be greatly appreciated! I've already got (don't know where I am going wrong):
(v)^2 + (1/2)(m)(v)^2 = (vf1)^2 + (1/2)(m)(vf2)^2
(3/2)v^2 =...
Hi! I've been trying to attempt this problem over here but the solutions state that the solution is this below?
However, from integrating the density and then plugging it into Gauss's law, I get the exact same thing, except a 15 instead of a 5. Could any please help point out if there is an...
Hello,
I am attempting to correctly solve this problem, however I end up with an equation that is slightly different as the one provided in the textbook solution.
For question (a) I get the same thing, just instead of cos, I have cos^2 and I can't figure out where I went wrong. My process was...
Hello!
I have done this problem :
vf^2 = (4.0x10^5)^2 + 2(6.0x10^12)(5x10^-3)
so vf= sqrt((4.0x10^5)^2 + 2(6.0x10^12)(5x10^-3))
I get vf = 4.7 x 10^5 m/s
However, the textbook solutions says vf = 8.7x10^5 m/s.
Where did I go wrong?
Thank you for any help! :)
The solution in my textbook says that for b, us = 0.234. However when I use the formula above I get 0.2364 which I feel like is too far off. Something must have gone wrong...
Any help would be much appreciated!
Thanks :)
I am so sorry, I got mixed up : by intuition I got that 2 - False!
1- True
2- False
3- True
4- False
5- False
I drew out the vectors and their x and y components, and found all this above
However---This has been marked incorrect... I really don't understand
Yes, by intuition I wrote True on that - It can be larger than 20N because it is the hypothenuse. However, the pattern
1- True
2- True
3- True
4- False
5- False
Has also been marked as wrong by my professor...