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Mathematics: Post your doubts here!
Verify that the plane with equation x-2y+2z=6 is parallel to the plane with equation r. (1,-2,2)=4 Find the perpendicular distances from the origin to each plane, and hence find the perpendicular distance between the planes. -
Chemistry P12!
haha it is not helping it is cheating great so u are bangladeshi -
Biology; Chemistry; Physics: Post your doubts here!
X is highest resistance as the resistors are all in series so they add up high resistance less current .in y there is a parallel arrangement so resistance is lowest less resistance high current- snowbrood
- Post #11,924
- Forum: O-Levels / GCSEs / IGCSE
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Chemistry P12!
aik bangladesh main cie na hota to kya dunya khatam ho jati cie walay ch hain -
I'm thinking of studying Physics A2 alone,is that possible?
if u get a studying environment where u can study for 3-4 hours without any distractions and and u have particular interest in physics then go for it -
Chemistry: Post your doubts here!
no problem glad that i could help yea:) -
what time is used in xtremepapers
can anyone tell me which standard time is used in xtremepapers its not PST thats for sure- snowbrood
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- Replies: 0
- Forum: Help, Ideas & Suggestions
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Chemistry: Post your doubts here!
q27 there is a homolytic fission as each radical gets one electron of the shared bond pair however there is going to be one major product and one minor product so there is 3:1 which one is going to be major one that beyond the scope of our study -
Chemistry: Post your doubts here!
we have hydrogen chlorine and sodium hydroxide as products if u let the products to react NaOH+cl2== NaCl+NaClO and h20 naoh and cl2 are used up so B is the answer remember the key words it is cold -
Chemistry: Post your doubts here!
q14 is too easy total mass of limestone(CaCO3) burnt=1200 mr of limestone=100.1 1200/100.1=11.988moles CaCO3 yields CaO+CO2 11.988*44=527 -
hey i think u have a youtube channel where u teach a level physics?
hey i think u have a youtube channel where u teach a level physics?- snowbrood
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I'm thinking of studying Physics A2 alone,is that possible?
it depends on u if u enjoy studying physics then go for it leave tution. i love stuyding physics thats why i never take tution for physics -
Chemistry: Post your doubts here!
2/(mr of x or w) number of moles=2/(mr of x or w) X is caco3 and w is mgo mgo has less mass so there will be greater number of moles or more acid neutralized by W so 1 is incorrect CaCo3=1oo and Cao=56 100-56=44 2 is correct .ca is down the group so react more violently than mg -
Chemistry: Post your doubts here!
well A B and C have hydrogen bonding so they cant be now we are left with D which has least number of atoms in a molecule is polar but have no hydrogen bonding so it is gaseous simple as that -
How was your physics MCQ paper 11??
lol u dont get more than an hour -
How was your physics MCQ paper 11??
was the paper difficult or easy -
Physics: Post your doubts here!
for q17 since diameter is 0.08m the bottom of ball is at 0.8-0.08=0.72 kinectic energy of ball before hitting ground=gravitional potiential energy at 0.72m from ground kincectic energy after hitting ground=gravitional potiential energy at 0.45-0.08=0.37m m*g*0.72=0.75 m=0.75/0.72*g... -
Physics: Post your doubts here!
for q8 for one train to overtake the other it must travel the same distance as the other s=ut+1/2at^2 u=0 for express train and a=0 for the train traveling at constant speed 0.5*0.5*t^2=10t t=40s for q 16 both weight and contact forces are acting downwards while the tension is acting upwards. in... -
Physics: Post your doubts here!
not exactly u got that wrong area of 0.5mm =(d^2/16)*pi area of 1mm=(d^2/4)*pi comparing both we find that area of 0.5mm is 1/4 the area of 1mm since volume of the wire remains the same whether u strech or not V=l*A for 0.5mm area decreases by four times so length should increaes by four so that...