Recent content by Josh123

Are stem cells (used in research) derived from frozen embryos from people who wish to do in vitro fertilization?

I got a little mixed up with the linear dependence/independence, but I understand now. Thanx I have another question though.. just want to make sure if my answer is correct: Let S= Span {(1,1-3), (2,2,-6) , (-4,-4,12)}. Is the basis of vectors = {(1,1,-3)(2,2,-6), (-4,-4,12)} ?

Question about "Span" Given 3 vectors: v1=(1,1,2) v2=(1,0,1) v3=(2,1,3) To determine if they span R^3, I placed these 3 vectors in an augmented matrix. I found the determinant to be 0 which means that the 3 vectors do NOT span R^3. My question is, since v1,v2,v3 are linearly dependent...

Thanks Doc... I'll check it out

Oh ok. It's at 90 degrees from B then. That makes more sense. Basically, the side that is 30 degrees from B is the bottom wire right? Thanks for your help

Hello. I have a question about RHR #2 (Force in a conductor). If IL X B = F and If the fingers represent the direction of the current, the thumb represents the direction of the force and the palm is the direction of the magnetic field, how come the magnetic field can be at an angle...

I used 30 degrees (angle between B and A-B)... Is that correct?

Well, it's a little bigger, but still kind of small http://img.photobucket.com/albums/v228/LianaBlank/cc5a5559.bmp Basically, I know that I = 5 A B= 0.5 T the sides of the loop are 0.05 m long The loopp was rotated around the Y axis and makes a 60 degree angle with the X-Y plane I...

Can you tell me what I did wrong. I posted it on photobucket: http://img.photobucket.com/albums/v228/LianaBlank/img003.bmp

I know that the formula to calculate the TE is (#of transformants)/(g of DNA) * (Final volume at recovery) / (Volume plated) but what exactly is "fianl volume at recovery"? Do I calculate the total # of pGal DNA, X-gal and recovery broth that I mixed up?

What if the number is small (but not zero)... ie 0.000001 = 0005e^(0.004/2R)

Thank you for help

Hello. I am working on this problem 0=0.002*e^-(0.005/2R) I am supposed to find to find "R". The only way I know how to do this gives me 0... but I know that it's not the answer. Got any tips?

In the equation: q(t) = Qe^(-t/RC).. I found Q... but I don't know what q(t) represents

Actually I only know one of the charges.