Nazharia

What are the applications of diffraction of light?

What does "Independence Day" really mean?

I mean, what is "independence" all about? Is it concluded in freedom? Respect? Loyalty? And why is it connected to that?

A Ladder AB, of length 13m, rests against a vertical wall with its foot on a horizontal floor at a distance of 5meters from the wall. When the top of the ladder slips down a distance x meters on the wall, the foot of the ladder moves out x meters. Find x....

A Pendulum 45cm long swings through a vertical angle of 30degrees. Find the distance of the altitude through which the pendulum bob rises. (I couldn't find this answer either :\ but can anyone please please help me! And if you can, can you also write the...

but in the answer book that has no way on how to find it says its wrong.. the answer of it is 1.533cm