Recent content by Maged Saeed

Can anyone help me Evaluating this integral! $$\int xe^xlnxdx$$

I think Mr @Mark44 is true. Can you start solving this equation? The only identity you need is sin(2u)=2sin(u)cos(u) What is the first step now?

It is strange equations.. But I think you can do it by matrices .. Can't you!

Oh , sorry delta L will be (3-1) =2 So the numer is two. I think I'm right now .

I think that it is 3 Am I right??

Sorry, I meant 3 The vertical distance between the two sources.

The condition says : for a destructive interference, (delta L/wavelength)=n.0.5 But how can I apply it here? The initial value of delta L equals to 1 and the final value equals 1.

Homework Statement Two speakers (S1,S2), emitting sound waves of frequency 340Hz and separated by a distance of 3 m, are driven by the same oscillator. A listener starts walking from point A to S2 Along the line that joins A and S2> How many points of destructive interference will be observe...

If you can put one of the velocities of the balls after the collision in term of the other , you can solve this problem. And the law of conservation of kinetic energy would help you.

How did you use the law of conservation of kinetic energy?

Yes, Because the loss in mechanical energy is equal to the work done by the non-conservative forces in an isolated systems

This is true because each element in the subset ' A U (A ∩ B) ' must belong to A .

No ,, You can understand it in other way. Imagine that there is someone on truck A that is moving with 70 km/h . so he will see the other truck 'B' , which is moving with 70 km/h , going with 140 km/h . Thus , this is the velocity of the truck B relative to A. v=va-(-vb) On the other hand ...

I have missed this point ,, it should be there ,,, :)

I have fixed my problem though, Reload the page ,