Biology; Chemistry; Physics: Post your doubts here!

[fatikhalid]

draw genetic cross diagram for both question no 40 and 37.
for 40= D d * d d
Dd Dd dd dd
so 50% chance or 0.5 probability.

for 37= A O * A B
AA AB AO BO
AA and AO are blood group A, BO is blood group B and AB is blood group AB.

for 12=the only reason which fits here is that roots were damaged while transporting, so they cannot take up water fast enough. wilting occurs when the rate of water uptake is less than rate of water loss. the stems were not touched, wilting does not relate to mineral ions, and if leaves lose less water, the cells would become more turgid rather than flaccid!

thanx..

 

[ayeshaK]

Can anybody tell me from where will i get locomotion notes ? As this chapter is not present in any ofthe books .thankyou !
Also can anybody tell me Bout the type types of teeth their functions
and also the details about the vertibrates and invertinrates ! Eg insects mammals etc
Thankyou

 

[hassankhan]

plz can anyone help me with p41 Q9

 

[GetSomeLife]

plz can anyone help me with p41 Q9

which part?

 

[SulmanAli]

What is the difference between fleming left hand rule and fleming right hand rule ? i get confused when to apply each of these ? Please Help

 

[multixamza01]

What is the difference between fleming left hand rule and fleming right hand rule ? i get confused when to apply each of these ? Please Help

FLHR is applied when current causes motion ( D.C Motor )

FRHR is applied when motion causes current ( A.C Generator )

 

[ashiqbal]

it

Please can someone explain the uses of transistors as simply as possible without copy pasting it off the net. ... would really appreciate your help

is used as switch

 

[convent2012]

help me out in 4024 w11 qp22 Q2 c) and in Q3 .

 

[ashiqbal]

help me out in 4024 w11 qp22 Q2 c) and in Q3 .

Q2 c (i) make a line from q, parallel to APwhcich will make an angle of 25degrees(alternate angles) with AQ.subtract 25 from 270 to get bearing = 245
------(ii) in this case, the base will be 100m, the height will be 30m. to find angle of depression from top of lighthouse, use tan-1(30/100) to get angle of depression of 16.67 degrees

Q3 has been discussed in detail in the proper thread of Maths, Addmaths and Statistics; post your doubts here!

please in the future, try to discuss the questions in the related thread!

 

[Tharindu]

Can anyone help me....there are questions on how to prepare insoluble and soluble salts...does anyone have a note on this....and also the molar solution part

 

[Rimsa]

Can anyone help me....there are questions on how to prepare insoluble and soluble salts...does anyone have a note on this....and also the molar solution part

check out post number 675 on page 34... i cant upload the file here.. net is slow...
that scan is helpful

 

[hassankhan]

which part?

from part h till k.....

 

[hassan100]

plz can anyone help me with p41 Q9

would u specify which part ?

 

[hassankhan]

i specifies from part h to k

 

[Mayedah]

Any important guess paper of chemistry from past years questions ?

 

[Tharindu]

Does anyone have notes on terelyne....It's not there in the organic section of my book

 

[khizer shahab]

What is the difference between fleming left hand rule and fleming right hand rule ? i get confused when to apply each of these ? Please Help

FRHR is actually for INDUCED current i.e created by cutting of magnetic flux through motion:- used in ac generator b/c based on same theory ..,while FLHR is for ELECTRIC current produced by any source and interaction with magnetic flux to produce motion somehow:- therefore this rule is used in d.c motor to know the direction.!!!

 

[nafis shahRiyar]

Could anyone post a Note on colour chart of chemistry?? Those colours are killing me !!!

 

[Rimsa]

Could anyone post a Note on colour chart of chemistry?? Those colours are killing me !!!

u mean the identification of cations?

 

[nafis shahRiyar]

u mean the identification of cations?

No...as in like colours of compounds...for example ammonium sulphate...how could i know the exact colour !!! ..any trick to deduce the colours??