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Posts by mohit

Total # Posts: 35

Science
Calculate volume of Carbon dioxide produced on heating 10g of limestone at S.T.P

physics
the potential energy of a spring..when stretched by 4 cm is u..when stretched by 20 cm it will ?

p.s
150 gram

science
AgNO3+NaCL=AgCL+NaNO3 is not a redox reaction but Cu+2AgNO3=2Ag+Cu(NO3)2 is a redox reaction.explain

Physics
A man starts running from his home towards east . After covering 60m ,he turns north and runs 80m. If he runs at uniform rate and covers the distance in 1 minute ,then what is its acceleration?

Chemistry
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. Ans is 0.227M Who help me thanks a lot

Physics
A ball is thrown verically upwards from the top of the tower with a speed of 100 m/s. It strikes the pond near the base of the towerafter 25 second. The height of tower is

maths
14792

physics
Q: A block A of mass 0.5 kg can slide on a frictionless incline of angle 30o and length 0.8 m kept inside an elevator going up with uniform velocity 2m/s. Find the time taken by the block to slide down the length of the incline if it is released from the top of the incline. ...

janulal
two mass 10 kg and 20 kg are connected with a massless string. a force pf 200 N is acting on the mass 20 kg . the acceleration of 10 kg is 12m/s^2 then the acceleration of 20 kg mass is

physics
a fan rotates speed of 600rev per min the power is cut it stopped after 60 rev find time

chemistry
500g urea aq. Sol. Has mole fraction 0.2 what is molality of sol.

math
Bella keeps a supply of red, blue, and black pens in a drawer. The drawer has 17 red pens, 18 blue pens, and 11 black pens. If Bella wants a red pen, what is the minimum number of pens she has to pull out from the drawer to make sure she gets a red pen?

Maths Calculus
We want to build a rectangular cardboard box with no top and of given volume V using the least quantity of cardboard. Find the length of the box's edges by fnding the minimum of the total surface function. Verify that the point you found is indeed a minimum applying the ...

Chemistry
The differnece in the mass of 100 moles of each sodium atoms and sodium ions is 5.48002 g. Compute the mass of an electron.

physics help
two mass 10 kg and 20 kg are connected with a massless string. a force pf 200 N is acting on the mass 20 kg . the acceleration of 10 kg is 12m/s^2 then the acceleration of 20 kg mass is

math
X=1000. y= 2200 z =1800

Birthday
May 26 is my birth day

science
how much work is done in bringing three electrons , which are intially a great disance apart to how fats will it be moving then it is at distance ?

science
an electorn is 20 ccom away from a fixed point charge , q =-0.250uc . if it starst to move from rest , then how fast will it be moving when it is a t distance ?

PHYSICS
7809.5 cm3

PHYSICS
The density of ice is 0.92 g cm-3 & that of sea water is 1.025 g cm-3.Find total volume of an iceberg which floats with its volume 800 cm3 above water. ANSWER:7809.5 cm3

PHYSICS
The density of ice is 0.92g cm-3 & that of sea water is 1.025g cm-3.Find the total volume of an iceberg which floats with its volume 800cm3 above water? ANSWER:7809.5cm3

PHYSICS
A wooden cube of side10cm has 700g.What part of it remains above the water surface while floating om water?

maths
AB=5cm , Angel B= 60 degree , Altitude cd= 4cm (Circle)

arithmetic
What is the use of arithmetic progression in a circular race track? Please answer soon !

math
There r 12 months in 1 year .Therefore using unitary method 12*7 = 84 months in 7 years Also 1/2 year means 6 months .Thus total of 84+6 = 90 months in 7& 1/2 years

maths
(x/25)+6 =18 x =12*25

physics
when any block slides down a smooth incline which is unfixed then the incline moves back.WHY??

maths
least number between the given range =36; to find the maximum no. divide 395 by 6 ;we get remainder to be 5 ;Therefore 395-5 will purely divided by 6 and also be the maximum no. in the given range Also total nos.:390=36+(n-1)6 calculate for n ; then apply 36+42+......+390=n/2(...

Math
slope of the line will be same to that of the given line i.e. 3 Now let the eq. be y -3x = m (where m is any parameter) this line passes through (5,1) therfore satisfying it we get m = -14 thus, eq. of required line is y =3x -14

maths
The sum of the co-efficients in the expansion of (1 - 2x +5x^2)^n is a and the sum of the co-efficients in the expansion of (1 +x)^2n is b.Then (A) a=b (B) (x-a)^2 + (x-b)^2 =0 (C) (sin a)^2 + (cos b)^2 =1 (D) ab=1 Ans. A,B,C But How???

chemistry
I want to have a deep insigth to my problem i.e. I know that bonds between atoms(of different or same elements)to be formed are based on no. of electrons less in octet or duplet(say O2, each O atom has two electrons less in octet thus forms two bonds).But why bonds between e...

chemistry
Q.1 Calculate the extent of hydrolysis of 0.005M K2CrO4.If K2=5*10^-7 for H2CrO4.(It is essentially strong for first ionisation).

democratic politics 10th grade cbse
1.produce decisions taking a lot of time 2. not free from corruption 3. money and muscle power have an influence on politics. 4. criminal connections also a demerit of democracy

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