Biology; Chemistry; Physics: Post your doubts here!

[Dark Destination]

If pressure was 33.33 then Force = 33.33 * 5 = 166.7 N

Wrong.. F was the amount by which it increased

 

[Ram97]

That's what i am saying. It was 3.33, not 166.6.

Pata nahin

 

[Dark Destination]

What was the answer to that large piston moving less distance?

I wrote it has greater cross sectional area, so it moves lesser distance to accommodate the same volume of oil. :/

 

[Awesome12]

Wrong.. F was the amount by which it increased

Pori dunya nai 166.6 likha. It was for only a mark

 

[Lilly2318]

13.

Well, i haven't prepared for English. I never do.
How to write Summary and stuff, though? Any useful tip?

 

[Dark Destination]

Pori dunya nai 166.6 likha. It was for only a mark

Puri duniya paghal hai
1 mark k liye pura formula laga k ye nahi karna tha.

 

[DaniyalK]

Wrong.. F was the amount by which it increased

Like I said earlier, the force exerted due to the pressure was the amount by which it increased. Suppose when nothing is pulled or pushed, the force due to the pressure of the water molecules on the piston is 10N. When you pull the lever 166N is applied. Total force is 176. Increase is 176 - 10 = 166. 5/1.5 is the ratio of the areas of the pistons and has nothing to do with increase in force.

 

[Awesome12]

Puri duniya paghal hai
1 mark k liye pura formula laga k ye nahi karna tha.

Ap jo wapda wale hai. Hum logo ki dimakh ki bhatti bhujadi
From the formula you get 166.7. I have no idea how you got 3.33

 

[Dark Destination]

Like I said earlier, the force exerted due to the pressure was the amount by which it increased. Suppose when nothing is pulled or pushed, the force due to the pressure of the water molecules on the piston is 10N. When you pull the lever 166N is applied. Total force is 176. Increase is 176 - 10 = 166. 5/1.5 is the ratio of the areas of the pistons and has nothing to do with increase in force.

You should have read the question properly, instead of blindly assuming that F was the force on the large piston, which it wasn't.

 

[Dark Destination]

Ap jo wapda wale hai. Hum logo ki dimakh ki bhatti bhujadi
From the formula you get 166.7. I have no idea how you got 3.33

Well, The exact words of the question:

''The force increases by F''...

So simply you had to state the ratio by which it increases. 5/1.5
Or the longer path, calculating 166.6 and dividing by 33.3.

 

[Lilly2318]

LETS FINISH THIS DEBATE HERE AND MOVE TOWARDS CHEMISTRY

 

[Dark Destination]

LETS FINISH THIS DEBATE HERE AND MOVE TOWARDS CHEMISTRY

What about Chemistry?

 

[asadalam]

What about Chemistry?

What subs are you giving?

 

[Lilly2318]

Eng maths phy chem bio urdu. u?

What subs are you giving?

 

[Dark Destination]

What subs are you giving?

Well, in this session.
Maths, English, Add-Maths, Physics, Chemistry, Biology, Urdu-B, Commerce, Business studies, Economics, Environmental management, Sociology, Ict.

 

[potterfan97]

how are some people getting 30kg water in that heat capacity question?

 

[asadalam]

Well, in this session.
Maths, English, Add-Maths, Physics, Chemistry, Biology, Urdu-B, Commerce, Business studies, Economics, Environmental management, Sociology, Ict.

And in other sessions

 

[Dark Destination]

And in other sessions

Gave Pakstudies and Islamiat before..

I haven't decided the subjects for Oct-Nov 2014, yet.

 

[asadalam]

Gave Pakstudies and Islamiat before..

I haven't decided the subjects for Oct-Nov 2014, yet.

What was the result

 

[Lilly2318]

Well, in this session.
Maths, English, Add-Maths, Physics, Chemistry, Biology, Urdu-B, Commerce, Business studies, Economics, Environmental management, Sociology, Ict.

How do u ,manage. i swear ur not human