• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Physics, Chemistry and Biology: Post your doubts here!

Messages
64
Reaction score
569
Points
93
I have got very concise speech but I'll explain
To reload a gun means to prepare i.e u have warned me and I am preparing for the enemy (results)
The word gun can b an effect of a competition,a war (exam)
Using the word s in guns means preparing thoroughly (in large amounts)
My sentences fill books that my sentences make....
 
Messages
249
Reaction score
4,920
Points
253
I have got very concise speech but I'll explain
To reload a gun means to prepare i.e u have warned me and I am preparing for the enemy (results)
The word gun can b an effect of a competition,a war (exam)
Using the word s in guns means preparing thoroughly (in large amounts)
My sentences fill books that my sentences make....
Dude ik what it meant , but the way u used it was kinda random . Where ru from ??
 
Messages
933
Reaction score
2,272
Points
253
thanks but nvm about that. what about THIS QUESTION?
View attachment 63659

why is it D?
Because we are working with the same volume of that conducting putty, an increase in c.s.a will bring a decrease in the length by the same factor as the c.s.a ( Volume of cylinder=pie r square * length/height)

So hopefully u would be knowing that doubling the diameter would increase the c.s.a by 4 times {That if the diameter of 5 gives u an area of 25, then a diameter of 10 will give u an area value of 25*4}

the length will then decrease 4 times of the original value

So by the formula u can work out or otherwise that there will be an…

R=l/4 / 4A

R=l/4*1/4A

R=l/16A

… over all decrease in resistance by a factor of 16.
 
Top