Recent content by emutudeng

It means that the max refraction is 2%. The point is to find diameter of the upper pipe. It depends of the two others.

Homework Statement My vocabulary is pretty bad in specialized English, so I have to post a picture of problem There are three pipes, the cross-section changes and all measures are illustrative, I need to find an easy formula to find the diameter of d3, so I can create formula in Excel and...

Lets say there is a body (0,8kg) moving in direct line for 12 seconds with balanced speed 15 m/s, but there is a wind blowing from a side with a force 0,5 N. So the body is moving diagonally and I should get the diagonal with pytagoros. The thought that the angle is between the actual trajector...

Just a question about simple moving body exercise. With no acceleration. Body moves with speed 15 m/s, time 12 seconds, mass 0.8 kg, and the force have a side effect 5 Newtons. Firstly, F=mg, so 0,8*0,98.Then I calculated the actual moving direction's force by pythagoros, that's 0,95N...

okey tnx, i undrestood, but i have one other question that if there is no number in the middle for example z=e-5i then r = 1 ?

How do I calcuate the values if x=2,5 ?

z=6*e2,5i Can anyone explain me ? The imaginary part = 3,59 and real part = -4,81 I tried e(x) = cos x + i sin x, but it does not help me.