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yaaaaaaaaaaaaaaaaaaaaaaa
i cannot bear thatttttt

no one can solve it?????

but remember energy in the formula is kinetic energy
and kinetic energy = negative of total energy
hence u must put 3.4V as energy..

the formula lemda = h / underrroot of 2ME is right..

i am totally agreed wid kria.....

some one replyyyyyyy

no one !!!!!!!!!!!

hey dude written wrong at heights the pressure decreases

In NH3 the dipole of N-H bond and lone pair is in same direction therefore not resultant becomes greater and in NF3 the dipole due to
N-F bonds and lone pair is in opposite direction hence the resultant
dipole become less...

A reflecting surface is represented y = .and concave suface is silvered.the equation of incident ray is

x = e .find the co - ordinates of point of incidence and equation of reflected ray and a unit vector in the direction

of reflected ray..

the heat released when 1 mol of substance is burnt..

zero degree
since i =0
therefore sin i = 0
therefore sinr=0
i.e. r=0..

okk so ur second ans is right i think the ans given in the book is wrong..

earth can be considered as a collection of charge in which charge
can be sent and form which charge can be taken
so if the terminal which is earthed is negative then it does not mean
that whole earth is negatively charged...