Recent content by thepassenger48

I'm a mechanical engineering student, and so I do have experience with stress/strain relations. I also forgot to mention that I learned basic SR in college (time dilation, length contraction, relative mass, energy...etc), not just using the more advanced mathematics behind it. Thanks for...

Hi, I'm an engineering student looking to learn General Relativity... I was wondering which textbook would be the best for me? I'm pretty well versed in classical physics, and in mathematics (linear algebra, multivariable calculus, partial differential equations), but I have no background in...

Homework Statement Given Line1: (x,y,x)=(2,1,-1) + t(-1,0,2) Line2: (x,y,x)=(1,1,3) + s(5,-6,-7) The lines L1 and L2 are skew; determine points Q and R on lines L1 and L2 respectively such that ||QR|| = 2 2. The attempt at a solution I have no idea how to even approach this question! Can...

Homework Statement Determine which of the formulas hold for all invertible nxn matrices A and B 1. (A+A^-1)^7 = A^7+A^-7 2. 2A is invertible 3. (A+B)² = A² + B² + 2AB 4. (ABA^-1)^6 = AB^6A^-1 5. A + B is invertible 6. ABA^-1 = B I know 2A should be invertible, and number 3...

Homework Statement An electric field is given by E = 2xî - 3y²j N/C. Find the change in potential from the position R[SIZE="1"]A = î - 2j M to R[SIZE="1"]B = 2î + j +3k m. Homework Equations ∆V = V[SIZE="1"]A - V[SIZE="1"]B = - ∫ E • ds [SIZE="1"](definite integral from A to B) Or...

That was a flawless answer. Thank you very much. I'm sorry for wording my question so poorly.

Homework Statement I have to find the slope of an exponential curve by using log identities. Using basic values such as: (10, 0.692) (30, 1.082) (70, 1.579) Homework Equations The equation is in the form T=Cm^p So the log function is logT=logC + Plog(m) right? The Attempt at a Solution...

Homework Statement Five point charges on a straight line are separated by a distance of 0.01 m. For what values of q2 and q4 would the net force on each of the other three charges be zero? q1-----q2-----q3-----q4-----q5 Where: q1= 2x10^-6 C q3= 1x10^-6 C q5= 2x10^-6 C Homework...

There's a picture of a Barium Ion here...

Hi, I'm having a lot of trouble with the following question. Answer: ([SIZE="4"]σ1s)2 ([SIZE="4"]σ*1s)2 ([SIZE="4"]σ2s)2 ([SIZE="4"]σ*2s)2 ([SIZE="4"]π2py)2 ([SIZE="4"]π2pz)1 If anyone can tell me how to obtain this answer, I would be very happy. Thanks.

Speed of gravity: Let's say the sun was to disapear, it would take a little over 8 minutes (distance earth-sun sun at velocity C) for the Earth to change gravitational course. Hence; the "effects of gravity" travel at C. Acceleration due to gravity: Corresponds to the gravitational force...

This is a case of kinetic friction. The static friction only applies to a rotating wheel (the friction between the wheel and the road allow the wheel to rotate); since it is only skidding, kinetic friction is the right one.

Black holes do not necessarily have to have infinite curvature, but enough mass to prevent light from escaping its gravitational pull. Infinite curvature would require an infinitely massive object; it's only a theoretical idea and is probably not possible. Einstein didn't believe that space time...