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rohit though you have the word "student" in your id you you are better described by the picture of your id,'shameless person'

but why can't the charges enter or move inside the closed conductor?What's the reason?

Why is the electric intensity inside a closed charged conductor of any shape zero?

my answer too comes 17/26.this means tht some mistake has been done in the book.thanks for help.

plz reply .rates r assured

PLz help me solve these probabiliy problems.I tried but my answers weren't matching with tht given in the book.below are answers from the book

:1.)A card is drawn from a pack of 52 cards.Find the probability that the card drawn is red or bears a number between 5 n 10 both exclusive.Ans..19/26

2)two cards are drawn at random from 52 playing cards.Find the probability tht one is a spade and the other is an aceAns..1/34

don't anyone want to answer ,rates assured

did u get it.plz reply don't worry about the rates

but for Q.2) 5 n 10 both are exclusive so thr will be 4*4=16 cards with numbers 6,7,8,9

thnx my mistake was tht i took sample space as 13C7.I added the girls n boys .thnx

plz don't anyone know how to solve it plz it's urgent

plz it's urgent

PLz help me solve these probabiliy problems.I tried but my answers weren't matching with tht given in the book.below are answers from the book

:

!.)A committe of 4 boys and 3 girls is to be formed from a group of 8 boys n 5 girls selecting randomly.What is the probability that the committe contains a particular boy n a particular girl?Ans..3/10

2.)A card is drawn from a pack of 52 cards.Find the probability that the card drawn is red or bears a number between 5 n 10 both exclusive.Ans..19/26

3.)two cards are drawn at random from 52 playing cards.Find the probability tht one is a spade and the other is an aceAns..1/34

In a condenser there are two parallel plates one +vely charged and the other without charge.Then due to the +ve charge of 1st plate the 2nd plate gains an equal -ve charge on the side towards the 1st plate and there are +ve free charges on the oother side of 2nd plate.

My question is that why the two plates do not gain equal potentials?

PLz it's urgent.I want to clear my concept

RATES ASSURED

Consider a wheel tied to a string at its centre.the other end of the string is hung under a horizontal ceiling.Now, at rest the wheel is horizontal.If the wheel is made vertical and then it is given a spin the wheel rotates without falling to gravity.and when it stops it falls to gravity.

How it is that the wheel doesn't fall when rotated , for a certain period?

PLZ Its URGENT