# Recent Activity

1. ### martinsyde rob replied to the thread What pressure would a strain of 40 µε indicate?.

I have made several attempts but keep going wrong, ive followed you last thread on it but can see how you made it work? i cant get the...

Jan 24, 2017 at 5:50 AM
2. ### Arman777 replied to the thread Friction Force on 2 blocks on a frictionless surface....

Theres no connection just theres $F_{mM}$ in N as I said If $N=F-ma-Ma$ we get zero If I can write N I ll sove the queston.Just Idk...

Jan 24, 2017 at 5:49 AM
3. ### Doc Al replied to the thread Friction Force on 2 blocks on a frictionless surface....

What does $F_{mM}$ equal? (Consider your answers to questions #1 and #2.)

Jan 24, 2017 at 5:44 AM
4. ### fresh_42 replied to the thread I Jacobson Radical and Direct Sums - Bland, Proposition 6.1.4.

Hi Peter, it is a direct application of the statement in exercise 3. For any $R-$homomorphism $f\, : \,M \rightarrow N$ of...

Jan 24, 2017 at 5:43 AM
5. ### Al_Pa_Cone replied to the thread What pressure would a strain of 40 µε indicate?.

I had the same problem, I stopped doing it for months and had to force myself back into it. Question 5c was a f*cker! I used...

Jan 24, 2017 at 5:43 AM
6. ### PeroK replied to the thread Relativity: Time dilation and distance calculations.

There's a clue in classical physics. Objects have a length. In classical physics this is an invariant between reference frames. You...

Jan 24, 2017 at 5:40 AM
7. ### giulio_hep replied to the thread A Assumptions behind Maxwell's equations for constant speed.

The question is: does the special relativity allow the universal speed to vary with time? I'd say no. Moreover I was kindly...

Jan 24, 2017 at 5:34 AM
8. ### f95toli replied to the thread have 5.19v dc want 5.00v dc ... need help please.

I would suggest looking for 5.0V voltage references instead of a regulator; most sensors want an accurate voltage but won't draw much...

Jan 24, 2017 at 5:33 AM
9. ### NascentOxygen replied to the thread Fluid Mechanics Theoretical Pipe Diameter.

Even I know that velocity does not have units of m s :eek: Your first priority should be to show units correctly. Not only will it help...

Jan 24, 2017 at 5:31 AM
10. ### martinsyde rob replied to the thread What pressure would a strain of 40 µε indicate?.

Hi Al, how did you go with question 5 part c of this assignment? I'm also doing the same tees assignments as you but hit a wall on q5c....

Jan 24, 2017 at 5:23 AM
11. ### windy miller liked Stephanus's post in the thread I types of time in relativity.

Perhaps I can add. Proper time is 1 minute, 2 minutes or 1 month, 2 months, etc... So if you see a rocket travelling toward (away from...

Jan 24, 2017 at 5:20 AM
12. ### Arman777 replied to the thread Friction Force on 2 blocks on a frictionless surface....

$F_{mM}=Ma$

Jan 24, 2017 at 5:19 AM
13. ### windy miller replied to the thread I Expanding universe and the Boltzmann brain problem.

The Botlzman brian problem assumes that a single brain is more likely to fluctuate into existence than a single universe , as a single...

Jan 24, 2017 at 5:18 AM
14. ### Doc Al replied to the thread Friction Force on 2 blocks on a frictionless surface....

Do a force analysis of the big mass M.

Jan 24, 2017 at 5:18 AM
15. ### Terrell replied to the thread Remainder factor theorem: please help me reason this out..

i agree with your statement with f(x)= (x^n)*h(x) including f(0), following the idea.. what i was thinking is... can a thousand degree...

Jan 24, 2017 at 5:16 AM