Recent content by mdnazmulh

A transfer function H(S) in s-domain has been obtained as H(s) = 5.0625/(0.0008s^2 + 0.0882s + 5.0625). I’m interested in finding its poles and zeros. I found that denominator polynomial 0.0008s^2 + 0.0882s + 5.0625 has complex conjugate roots. Roots are -55.13 + i 57.35 and -55.13 - i...

Let’s select two numbers x and y such that 1<=x<=4 and 2<=y<=6. What is the probability of x +y>=5? I solved the problem and attached it. Please check my solution and tell me whether my approach of solution is correct or wrong. The most puzzling matter is that I'm getting two different...

The event of losing electrons in anode can be interpreted in terms of the electric field set up by the external battery. As the battery exerts an electric force on the negatively charged chloride ion, its excess electron located loosely in its out most shell is attracted by the electric force ...

If that happens, it indicates a chemical reaction. For every chemical reaction to happen, it requires appropriate environment i.e. pressure, temperature and other parameters. Now water being a polar solvent doesn't provide chloride ions appropriate environment to transfer their excess electrons...

Why do almost all computer chips have green color? Like the RAM, microprocessor, motherboard are mostly of green color. Does this green color have any relation with the fact that chips are made of silicon i.e. are they green due to the presence of silicon? I've also seen brownish color...

No, it’s not possible because scientists confirmed the existence and positional mapping of dark matter by a method called gravitational lensing. They send light rays in the space to locate dark matter. When light rays pass through a glass, they get bent. Similarly dark matter bends the light...

Oh yeah, it’s very common among engineers and physical scientists. No it's not your flaw at all. It's our limitation. Today every subject’s domain is increasing at enormous rate but our life span is not increasing significantly. So naturally we are compelled to focus on a specific area because...

According to wikipedia Edward Witten did BS in history and he combined known string theories into a single M-theory which is a candidate for theory of everything. I think If any person's life isn't a function of somebody else's life i.e. his spouse or parents, then at any moment of his life he...

Thank you all for responding. I want to specially thank D H and Matterwave who made the whole scenario clear to me. That's the thing I was missing. With respect to our milky way it appears that those distant galaxies are moving faster than light. But with respect to any neighboring galaxy of...

I'm studying electrical engineering. In circuit theory, we use matrices to solve for current or voltage. In electromagnetic field theory which is a fundamental course for communication engineering, conception of divergence, curl are important. For other fields of engineering, computer memory...

I agree 100% with u. But alas! none of you addressed my second point where I stated about the velocity of milky way. Can any expert tell me when milky way's velocity will cross the velocity of light?

Hi, my knowledge in astronomy is very little. So pardon me if my thinking becomes stupid. All the galaxies are moving away from one another with acceleration. The more distant they are, the more acceleration they have. Acceleration implies increase of velocity. So my point is that if the...

so 'kahn' is one of the possible permutations of 'khan' ? :biggrin:

Thank you all of you for your suggestions. At least I have now some clues from your suggestions about the approach to study mathematical logic. Thanks again

I had taken two math courses in last semester- Probability and Complex variable & FT. They were not interrelated that much but it didn't make any problem for me. Actually it depends on the person. If you are confident to take two math courses, do not hesitate. At least do something new to...