Recent content by GreyGus

I had a negative number because for the last one I applied the formula and got (3!)/(3-4)!(4)!(2^3). I might have posted the problem wrong, for that I apologize. But it's suppose to be four columns, one for the different C's I counted, fj's, expected distribution and the head number I'm...

Dear Doc. Al Could you please help me with this homework? It's due in a couple of hours. https://www.physicsforums.com/showthread.php?t=334084

Homework Statement For this exercise, four coins are tossed 32 times and the number of heads are recorded for each toss. Each toss falls into one of the following macroscopic states; 0 heads, 1 heads, 2 heads, 3 heads and 4 heads. Suppose the 32 tosses result in the following outcome...

Oh my bad. Ok so I got the answer, but I want to know why is the answer negative?

Could you please help me with the second part of this one? I don't know where I'm going wrong on this one either and it's my last question. https://www.physicsforums.com/showthread.php?t=333199

How would you find the x-component of force q1 to q3? I have tried: r=.1 f=k(3.1*10^-6)(5.2*10^-6)/(.1^2) tantheta=(.06/.08)=36.9 x-component=11.61 N. But that's not right. What did I do wrong on this one?

OH! Now I get it! Thank you very much for your help I appreciate it. I need a different book because my physics do not talk about electric fields and forces to to such detail. Thank you so much.

So the force is pointing at East as well. For the first one if a negative charge is acting on N, the force would point South right?

Not to me, I have tried all of them but Loncapa is saying they're wrong. I thought it would be East. Did I make a mistake somewhere else?

I've tried everything, North, South, East, West, none is correct. How to know where the field is directed without the graph?

Could you please tell me which one? Because my answers are based on the fact that for the negative charges the lines point inward so the direction would South instead of north. For the point M I really don't know because it looks more like North east than anything, but North East is not an...

I think my answers reflect that logic, don't they?

Inward for the negative and outward for the positive.

Yes I attached one to it. It's right under it, it's the attached thumbnails.

Could you also help me with another problem? I'm having some difficulties in that one as well. https://www.physicsforums.com/showthread.php?p=2326272#post2326272