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Physics: Post your doubts here!
waisay lite janay wali h bute lets see what i could -
Physics: Post your doubts here!
resistance of C is what that u might not have figured if u draw tangents at 1V 2V 3V u will notice that the gradient for R is greater than C u know that resistance does not equal I/V it equals V/I so u have to find the inverse of that gradient in short greater gradient means less resistance. the... -
Physics: Post your doubts here!
for Q4 u have to define what a stationary wave is and then tell that speed that u acquired is the speed of incident and reflected waves. for Q5 for part 2 just use the equation young modulus=stress/strain stress=f/A=f/7.9*10^-7 strain=2.6*10^-3/0.62 young modulus=2*10^11 now u can find F. -
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Chemistry: Post your doubts here!
well i have already solved this will give u an explanation for this when i get free -
Physics: Post your doubts here!
but the final speed in graph A is not same as initial speed of both skaters -
Physics: Post your doubts here!
http://tinypic.com/r/34p1j61/6 can anyone solve this questions and tell me why the answer is A littlecloud11 einstein -
Chemistry: Post your doubts here!
littlecloud11 To Identify oxide of nitrogen 0.1 mol of oxide is mixed with an excess of hydrogen and passed over a catalyst at suitable temperature NxOy + H2 on heating with catalyst gives xNH3 +yH2O the produced weighs 7.2g the ammonia produced is neutralized by 200cm^3 of 1.0 moldm^-3 Hcl what... -
Chemistry: Post your doubts here!
In the context of the A level syllabus, only two acids can be oxidized, and that is methanoic acid and ethanedioic acid (COOHCOOH also knows as oxalic acid). In the presence of acidified aqueous KMNO4, it will be oxidized to produce carbon dioxide and water. ethanoic acid is acetic acid so it... -
Chemistry: Post your doubts here!
When the salt (C2H5)4N+Cl- is treated with hydrogen chloride a white ionic solid X is formed. When X is dissolved in water a 20cm^3 sample of the solution requires 24cm^3 of 0.1moldm^-3 Naoh for neutralization. Another 20cm^3 sample of the solution requires 48cm^3 of 0.1 moldm^-3 AgNO3 for... -
is igcse computer studies (AS) hard or easy ?
yes it is very very hard -
Physics: Post your doubts here!
i can solve this but i dont get one thing is the force exerted on X by Y or force exerted by Y on X the same? -
Chemistry: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20%289701%29/9701_s04_qp_1.pdf can anyone solve q 28 i dont get it please -
Chemistry: Post your doubts here!
for question 1 moles KOH = 1.0 x 10^-2 mol/dm^3 x 0.025 dm^3 =0.00025 2 KOH + H2SO4 = K2SO4 + 2 H2O moles H2SO4 = 0.00025/2 =0.000125 moles CaSO4 = 0.000125 initial concentration of CaSO4 = 0.000125 mol/ 0.050 dm^3 =0.0025 mol/dm^3 -
cant study and exams are near need help
hey guys i was studying till march and then whole month of march went without any studies so i am really tensed and when i want to study i get distracted as there are kids at home due to their summer vacations can anyone help and suggest what to do my preparation was good but now i cant say... -
Chemistry: Post your doubts here!
OHCH2CONH2 PRODUCES NH3 WHEN HEATED WITH NAOH CAN ANYONE TELL ME HOW AND WHAT GROUPS ARE RESPONSIBLE FOR THAT -
CIE- A Level June 2005 Mathematics P1 9707/01
what just one like man u deserve a million likes -
Chemistry: Post your doubts here!
i do know this but how cud i use this fact to determine which acid is more stronger than the other can u explain -
Chemistry: Post your doubts here!
can anyone tell me how to determine which acid is stronger than the other using as concepts only. for e.g write the correct order of strength of acid in increasing order for ethanoic acid chloroethanoic acid and phenol