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1. ### Why does sprinkling of water reduces temperature of a closed room?

The initial pressure (P) and Volume(V) are same. Two processes one isothermal and other isobaric are carried out both ending at the same volume. In which case is more energy given to the gas as heat? Any help with this question?
2. ### Why does sprinkling of water reduces temperature of a closed room?

>Two vibrating tuning forks produce progressive waves given by >y1 = 4 sin(500pt) ... p = pi = 3.14159 and t is time >y2 = 2 sin(506pt). >Then how many beats are heard per minute? Beats are caused by waves that have close frequency and they interfere. For same amplitude we just subtract...
3. ### What is the probability?

Three persons A,B,C are to speak at the function along with 5 other persons. If the persons speak in random order, what is the probability that A speaks before B and B speaks before C? I am unable to begin with calculating the favourable possibilities.
4. ### Why does sprinkling of water reduces temperature of a closed room?

Hi, I have a few questions from waves, thermodyanamics and capacitors. Please help me with them. Two vibrating tuning forks produce progressive waves given by y1 = 4 sin(500pt) ... p = pi = 3.14159 and t is time y2 = 2 sin(506pt). Then how many beats are heard per minute? -- How do I...
5. ### Mass center problem 2

oops. there was some problem. now when using firefox the images have been loaded. (was using opera before). sorry
6. ### Mass center problem 2

Is there any figure associated with the question? I don't think this can be solved without knowing the positions of the cutouts of radius 'b'
7. ### How to solve this:f(x)=(x^2) (ln x) (cos x)

Do you know that d(uv)/dx = v(du/dx) + u(dv/dx) Now here you have three functions. Can you take two functions as one and then apply the above rule again i.e. apply it two times.
8. ### Int (x-2) / (x^2 +2x +3 )

does aanybody knows how to do this: int (x-2) / (x^2 +2x +3 ) write the numerator in the form 1/2[(2x+2)-6] now you get on dividing 1/2 { (2x+2)/(x^2+2x+3) - 6/(x^2 +2x +3)} for the first part you cand substitute x^2 +2x +3 as t and it will simplify and for the second part make factors...
9. ### 2 Pre Calc problems

k= (y1-y2)/(x2-x1)is wrong Slope is m = (y1-y2)/(x1-x2) not as you have given.
10. ### Probability question

There are n stations between two cities X and Y. At train is to stop at three of these n stations. Find the probability that no two of these three stations are consecutive. This is what I did: Total number of possibilities nc3 . Now suppose that the stations train stops at is such that...
11. ### Urgent help needed with phone

No. That does not work. I have tried everything possible. Taking out the batterry, using a different sim card. There is something more serious I suppose. I don't suppose there is a 'virus' out on the loose that affects this phone. I always thought that my phone was safe as no person would bother...
12. ### Urgent help needed with phone

Hi, I don't know if this is the right place but i am facing a strange problem with my T290i. It is just kept and it just reboots by itself. I do nothing. Once this happened I switched it on it said Charging error stop charging. It was not connected to the charger. All this happened by itself...
13. ### Maxima and Minima

any help out there?
14. ### Maxima and Minima

Hi I am stuck on this ques. although i have solved and got the ans but i am still facing a problem. Find the shortest distance of the point (0,c) from the parabola y=x^2 where 0<= c <= 5 i got the ans right that is (c-0.25)^0.5 but i have not been able to understand the use of the 0<= c <= 5...
15. ### Help with a functions question

I copied the question as it is.
16. ### Help with a functions question

Determine all functions f(x) defined for all real numbers x and taking real numbers as their values such that f(x) + f(1-x) = x^2 - 1 If i replace x by 1-x i get the same LHS and if i equate them i get x=0.5. What I need to do more is what i don't know. Please advise PS sorry if i...
17. ### Which is the stronger acid?

I have two organic compounds, Methanol and Methanamine (CH3OH and CH3NH2). The question is to predict their relative acidity. I reasoned in this way. Oxygen is more electronegative than hydrogen. So methanol will bond the hydrogen more tightly since bond strength is directly proportional to the...

That's what written in the book. The ans is yes. but i am not able to appreciate the fact. WHY?