Recent content by yakin

Got it sir, thanks a lot :)

A quiz has 4 questions with 3 choices for each answer. If you guess every answer, in how many different ways can you complete this test?__________ How many students must take this test to guarantee that at least 3 identical answer sheets are submitted?__________ I know how that the answer to...

A laser emits light of wavelength 463 nm during a brief pulse that lasts for 25 ms and has a total energy of 1.2 J. How many photons are emitted in that single pulse? (c=3.00E8 m/s, h=6.626E-34 j.s)

So 1000 and 160 is the answer. And did I draw the Binary Tree right?

I am ending with no operator in the end. So 1000 160 would be the answer or what. I do not know what to do from here. Please help!

Angle of incidence is the angle from the normal to the ray. Whats up with Australia though?

I do not understand why we do we subtract from 90 degrees when finding the final answer for angle of incidence?

Actually, i have done my work. Just wanted to know if it is correct. Here is an image of my work.

Does gravity on Earth stays constant regardless of height?. For instance, if a person standing at a mountain would he experiences the same gravity as the person standing on the ground?

How to determine whether a graph is connected or not?

How to find if a graph has a cut-edge/bridge and cut vertices. In other words, i am mixed up between cut edge and cut vertices? What is the difference and how one can find these in a graph?

I was watching the video on youtube provided by monkeysee.com explaining the reason we see leaf green is because it does not absorb green light hence reflects green light to our eye. So it means if some how we change the biological/chemical properties of a leaf we won't see it as green? In other...

Physics: An 84-kW AM radio station broadcasts at 1000-kHz. How many photons are emitted each second by the transmitting antenna? (h=6.626E-32 Js)

Thanks