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 Astha Sharma's messages in the community 1 2 GO Go to Page...
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 This Post 0 points    (0    in 0 votes )   [?]
How come? how did he get into IIT for he's too young for it and not even eligible? I think he might not have completed his school too.Does he visit college everyday?Wow, I have so many questions in my mind (& still more to ask)
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We cannot call it a general formula since it doesn't follow the same pattern for cosine function. See the last question you have typed. And every question cannot be a formula .Do you think you have to learn every question in the form of a formula?  (then I would be lost if I learn 25 questions of the ex you've mentioned)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Use Gauss' theorem (this I know for sure)

I don't know integration otherwise I would have solved it further.

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Everything in chemistry is hypothetical

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

No, you can't use that formula or I should say there is no such formula.

The formula is (sin a+ sin b)(sin a - sin b) for (sin^2 a - sin^2 b)   ----{the basic formula used is (a^2-b^2)=(a+b)(a-b) }

Similarly for cos, you can use it.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Because the angle between the 2 refracting surfaces is 0 (as the 2 surfaces are parallel to each other)

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Ans is infinite images.

There is no such formula to find the number of images in such a case. Its a fact that when an object is placed between 2 parallel plane mirrors, infinite no. of images is formed.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Apparent depth = real depth = 7cm when viewed normally (no refraction and no reflection)

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Ans= 1.

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me too want it plz help and mail me at mepurelyangel@gmail.com
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## Wind is air blowing with a large velocity from a region of higher pressure to a region of lower pressure.

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 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

# Cp/CV=1+2/f  (f=degree of freedom)

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## 3 * 5  * 8 *  7 = 840

### 7 ways to fill last digit (i.e.1 to 7  this does not include 0 as the first number will be 5301).

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

## yes, it is true

### The force of static friction between your hand and the sheet points forward, in the direction of motion. The force of kinetic friction between table and sheet points backwards. and so the force of static friction exerted on the sheet of paper does work on the sheet. It is nonzero force, parallel to the displacement.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

## Ans- 840

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

Power= work done/time

P=W/t

But W=F*S  (F= force, S= displacement)

P=F*S/t

F=P*t/S

P is constant

therefore Fis proportional to t/S

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

### where y= young's modulus  and   k= bulk's modulus

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### 0/1=0 and 1/0= infinity

anything/0= infinity  and 0/anything=0

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

### now plot graphs for the two equations and notice their intersecting points, from here you'll find smallest +ve value and the smallest +ve value comes out to be 0 (as the graphs meet at origin).

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