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Physics: Post your doubts here!
An aeroplane travels at an average speed of 600 km h–1 on an outward flight and at 400 km h–1 on the return flight over the same distance. What is the average speed of the whole flight? A 111 m s–1 B 167 m s–1 C 480 km h–1 D 500 km h–1 The anwser is C, how -
Physics: Post your doubts here!
Q26 X=DW/A where x- is fringe speration d-distance b/w the screen and the slit w-wave length a-seperation of the slits using the fromula Increase the distance between the slits :fringe seperation increases Increase the length of slits, i mean the hole :intensity increases (brighter and... -
Physics: Post your doubts here!
An aeroplane travels at an average speed of 600 km h–1 on an outward flight and at 400 km h–1 on the return flight over the same distance. What is the average speed of the whole flight? A 111 m s–1 B 167 m s–1 C 480 km h–1 D 500 km h–1 The anwser is C, how -
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Chemistry: Post your doubts here!
An aqueous solution was prepared containing 1.0 mol of AgNO3 and 1.0 mol of FeSO4 in 1.00 dm3 of water. When equilibrium was established, there was 0.44 mol of Ag+ (aq) in the mixture. Ag+(aq) + Fe2+(aq) Ag(s) + Fe3+(aq) What is the numerical value of Kc? A 0.35 B 0.62 C 1.62 D... -
Physics: Post your doubts here!
i did that turns out my calculators battery was low -
Physics: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w12_qp_11.pdf Q15 -
Help in Maths P3 Vectors PLZ
anyone mind explaining foot of the perpendicular to me in vectors eg http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s04_qp_3.pdf Q11 -
Vector discussion...
anyone mind explaining foot of the perpendicular to me in vectors eg http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_s04_qp_3.pdf Q11 -
Mathematics: Post your doubts here!
anyone mind explaining foot of the perpendicular to me in vectors eg http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s04_qp_3.pdf Q11 thx -
Chemistry: Post your doubts here!
R-COCl > RCl > Ar-Cl So yes your right :) -
Chemistry: Post your doubts here!
For R-COCl it is the easiest as the carbon atom attached to Cl is Extremely +ve beascause of the polar C--O bond and C--CL bond, both Cl and O are highly electronegative elements For RCL only one electronegative element and there are no other interactions with it -
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Chemistry: Post your doubts here!
The anw is H The anw is in the Question, they say free rotation of the C--C bond can occur. So just rotate the C--C bond in b/w both sides until one of them mathces Q like these require some common sense and read the Q carefully have the Anw is already there, if something like this pops stay... -
A level Biology: Post your doubts here!
Sympatric speciation is when a new species is born form an orginal species while the are in the same geographically area. This happens for a variety of reasons, a mutation can cause a change in look, behaviour or smell that is unatractive to the original species, thus they cannot find a mate and... -
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Heard about MERS coronavirus? o.O
I made a awareness poster about MERS for a community service project spread this around your community and FB -
A level Biology: Post your doubts here!
Polyploids is when the chromosome number of an organism increase to more than 2n, if the it is an odd no. eg 3n, 5n they are infertile as they cannot undergo meiosis as homologous paring of chromosomes cannot take place. If it is even then homologous paring can take place and therefore they are... -
AS BIOLOGY HELP NEEDED PLEASE! (9700)
1- Active transport (feel it's wrong) 2- 4 for carbon dioxide 5 for oxygen 3- there where two Q regarding HB one was something abt which protein structure when is some condition (Primary) The other one was abt sickel cell anemia Which tRNA molecule is not used in the recessive version it was the...