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yeah answer is 20 but what is the method?
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please tell hw the reaction proceeds in the following question:
A solution of (+)-2-chloro-2-phenylethane in toluene racemises slowly in the presence of small amounts of SbCl5, due to formation of
1. carbanion
2. carbene
3. Carbocation
4. Free radical
Ans: Carbocation
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a block of mass 1kg is placed on a rough surface with coefficient of friction = 0.2.A force whose magnitude varies linearly with time starts to act on the block.The force starts increasing from zero at the rate of 0.2N/s.Find the time after which the block attains a velocity of 10m/s.
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THREE PARTICLES START THEIR MOTION FROM THE ORIGIN AT THE SAME TIME , THE FIRST MOVES WITH A VELOCITY u1,ALONG x-AXIS, THE SECOND MOVES ALONG THE y-AXIS WITH A VELOCITY u2 AND THE THIRD ALONG THE LINE y=x. THEN, THE VELOCITY OF THE THIRD PARTICLE SO THAT ALL THREE MAY ALWAYS LIE ON THE SAME STRAIGHT LINE IS:
a) (u1+u2) / 2
b) sqrt ( u1*u2)
c) (u1*u2)/(u1+u2)
d) (sqrt 2) * (u1*u2)/(u1+u2)
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YEAH I TRIED THIS METHOD BUT AM UNABLE TO GET THE ANSWER.....
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consider angle PAO as a=30 degrees.
at any time t
a=2 t
then da/dt= 2
and y=3 tan a.
then calculate dy/dt
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consider angle PAO as a=30 degrees.
at any time t
a=2t
then da/dt= 2
and y=3 tan a.
then calculate dy/dt
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consider angle PAO as a=30 degrees.
at any time t
a=2t
then da/dt= 2
and y=3 tan a.
then calculate dy/dt
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A man weighing 60kgf stands on an immobile platform with a mass of 100kg.What no. of revolutions per minute will be made by the platform if man moves along a circle of radius 5m around the axis of rotation?The man moves relative to the platform with a velocity of 4km/hr.The radius of platform is 10m.Consider the platform as homogeneous disc and man as a point mass.
Ans: 0.49 rev/min
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but inductive effect is overruled by resonance which is observed in all three.so steric factor has to be considered. since its most difficult to react with 1st for the steric reasons it is last,then in between 2nd n 3rd, 3rd will have the maximum rate because it has an additional ring attached to it,increasing its stability than the 2nd compound.hence the correct order is
3>2>1.
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TRY INTEGRATING BY PARTS..TAKING 1/x AS 1ST N sin x AS 2ND FUNCTION
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the one at A/2 is moving towards the origin on the +ve x axis and the one at A/sqrt 2 is moving away from the origin on the -ve y axis.
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two particles 1 & 2 are in shm with same amplitude(A), angular frequency.At time t=0,one is at x=A/2 and the other is at - A/sqrt 2.both are moving in the same direction.when will they collide?
ans: 5T/16 ( T= time period)
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SHOULDN'T IT BE MAXIMUM COMPRESSION( INSTEAD OF ELONGATION)???? BECAUSE YOU SAY THAT THE SPRING IS BEING COMPRESSED.........PLEASE CLEAR THIS..
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please help me...is there nobody who cannot do this?
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hw can charge flow to capacitor b wen the circuit is not complete ie from the ends of A n B. this is a very common question and was once asked in jee.
please rate me if u feel i have made ur problem clear
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hey please tell me the detailed way of calculating n factor for all types of reaction...
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yeah its a very good idea...mole concept is really important and a very basic chapter
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SUBSTITUTE cot x AS t2, THEN cosec2x dx= -2t dt, sec2x = 1+t4 then the integral becomes [ ] [ ] (-2t 2dt)/ 1+t 4 which can be written as [ ] (1-t 2dt)/ 1+t 4 - [ ] (t 2+1dt)/ 1+t 4 i think this becomes easier now.... as tthe above expression is very familiar type of integration.
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