Recent content by Jenny0000

Just derive the U (potential energy) to dU/dx and d2U/dx2 .But I am not sure my sign is correct not ,my equation is correct not

can show the step？

Can anyone shows me what is wrong is my working,feel something wrong

It is a charge which repulsion refer to positive charge at the middle while attraction refer to negative charge at the middle.

Hi all , please refer to the picture regarding my working. please correct me if My working is wrong. I am quite confused about the positive and negative sign in equation

b)0.05-0.04=0.01 c)move at 0.02 right?

C) P.E=1/2 (12.5)(0.02)^2+1/2 (12.5)(0.02)^2 =0.005 J B)P.E=1/2 (0.01)^2+1/2(12.5)*(0.01)^2 =0.00125 J what is the next step? both answer is 0.16(b) and 0.0363 (c)