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Catalogs Discussion Forums -> Optics -> a few more questions !!!! -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
7 replies   
wht?? i didnt understand what you mean????
 oh i made a spelling mistake it is sinC=1/(A+B/) sorry now is it rite???
Catalogs Discussion Forums -> Physical Chemistry -> what is hess law -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   
Hess law is an algebric way of equating enthalpies of chemical equations just like simple mathematical equations with simple decisive coefficients!!!!
Catalogs Discussion Forums -> Optics -> a few more questions !!!! -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
7 replies   
sinC = 1/(A+B) this the varition principle between wavelength and critical angle where A and B are constants!!! as  varies so does critical angle for diff colours!!!
Catalogs Discussion Forums -> Mechanics -> WHAT WILL HAPPEN IF WATER INSIDE A BOB OF A PENDULUM FREEZES?.EFFECT ON TIME PERIOD? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
38 replies   
yeah even i too think that as volume increases there is redistrbution of mass and centre of gravity changes its osition and effective length increases and thus time period increases and yeah computer i think you too are right it might crack!!!
Catalogs Discussion Forums -> Organic Chemistry -> help me!!! its urgent plz!!! -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   
alpha D glucose and B D glucose are anomers which differ in config at C1 carbon and they have sligthly diff melting points and their reactivity is sligthly diff but otherwise they show similar properties
 
helix and pleath strutctures are those of the secondary structure of proteins and while helical structures consists of double stranded linked polpeptide chains pleathed structure depicts the plane shape of polypeptide linkages in 2D while helical is # dimensional!!!
Catalogs Discussion Forums -> Electricity -> True or false -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
9 replies   
it does have an absolute potential at a given point which can be fonud from the relation V=Ex where x is the distance from the source!!!
Catalogs Discussion Forums -> Electricity -> Is this correct -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
11 replies   
Oh cool da gaurav too online ah!!!
 
nways heres the explaination check even www.wikipedia.org and ncert text books
 
the whole vandegraff generator is placed inside a metallic chamber under pressure why???
the reason is that as the charge on the outer sphere there is increasing there is a possibilty for the air around to get ionised as air has a certain dielectric strength the metallic chamber prevents charge leakage and pressure prevents ionsiation
 
here in vacuum you dont have an molecules to get ionsied and thus dielectric strength no defined but air has a certain dielectric strength accepted ah gokul!!!
any contradictions???
Catalogs Discussion Forums -> Mechanics -> conceptual doubt -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
17 replies   
T - (m1) ( g + p) = (m1)a              
 where p=w0 and a = a  relative to the lift

(m2)(g+p) - T =(m2)a           
a = (m2 - m1)(g+p) / (m1 + m2)
 
by solving these equations you will get finally
 
a1=- [(m1 - m2)g + 2m2 w )/ (m1+m2)
 
and then T from the abve equations
i am unable to type the full thing but hope you understand from here!!!


 
Catalogs Discussion Forums -> Electricity -> Is this correct -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
11 replies   
i too feel the same way as you have to consider also the dielectric strength too where there is a varience between air and vacuum !!! under the normal conditions we then can say they can but consider the fact that air must not get ionised and we can keep the capacitor in a metal chamber under pressure to prevent this happening !!!!i hope i too am rite!!!
Catalogs Discussion Forums -> Mechanics -> missiles qns rates assured -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
7 replies   
coz i had posted this answer there too the same question has been asked i that post!!
Catalogs Discussion Forums -> Mechanics -> missiles qns rates assured -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
7 replies   
the earth is not a flat surface as you consider for a projectile motion the mistake we do is that all those formulas are acceptable only for a short range distance and not for missile projection the angle with which  it is launched depends on the angle of dip and declination at that place!!!!
 
hey is jain 108 your friend !!!
Catalogs Discussion Forums -> Organic Chemistry -> Please tell me about all the oxidising and reducing agents and how they work? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
4 replies   
see basically there are a wide range of oxidising agents and reducing agents
 
for eg
 
oxidising agents
KMnO4,K2Cr2O7,H2SO4,OsO4 etc
 
reducing agents
H2/Pd,LAH,NaBH4etc
 
see some attack only certain bonds others like LAH are highly reactive and reduce all bonds
 
basically reduction means formation of C-H bond and removal of C-O C-X bonds etc
 
for eg LAH reduces all double bonds and C=O groups where as MPV reduction ie using Aluminuium isopropoxide reduces selectively only C=O
any doubts you are always welcome to ask!!!!LAH is the strongest reducing agent!!!
Catalogs Discussion Forums -> Electricity -> a point charge is placed at rest inside a thin metallic spherical shell, but not at its ce -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
15 replies   
i am confirmed and sure that its zero its based on the fact of electrostatic shielding the cavity in that case need not be at the centre so remember wherever you place the charge inside it will redistribute accordingly on the surface and no force is experienced by the source!!!ie the charge!!!
Catalogs Discussion Forums -> Mechanics -> fluid mechanics... -> Go to message
This Post 2 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
10 replies   
yeah hes rite
 
when velocity of inflow is equal to velocity of outflow there is no change in height and therefore it corresponds to the max height!!!
Catalogs Discussion Forums -> Mechanics -> Find Work done by Frictional Force -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
26 replies   
hey i think you got confused friction is used to oppose relative motion i hope u understand when there is no realtion between the block and wedge the frictional force betwwen the block and wedge does not do any work but the force of friction between the wedge and ground if it was there would have done work understood!!!
 
 
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