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KE +PE remains constant if no work is done by ext force.here an ext agent person did the work and so PE changes
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a+b=-c
square on both the sides
|a|^2+|b|^2+2|a||b|cos@=|c|^2
substitute and solve for cos@
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@feynmann plz xplain the procedure  a dz = a^2? it should be (a^2)/ 2
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grttttttttttttttt.....................
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their speeds and radii are different.there wont be constant dis between them
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two particles are moving round concentric circular paths of radii R1 and R2 (R2=3R1) and are closest to each other at a certain moment.the particle on the outer path has slower speed V2 as compared to the inner one which has a speed V1 (V1=2V2).find the least time interval between their successive appearances at their initial positions at the same time.
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srujana
the compound is completely burnt in oxygen.
3.38/44 moles of co2 is evolved.
means in 0.0768 moles of co2 there are 0.0768 moles of c and 0.0768 x 2 moles of o
in the same way there are 0.038 moles of water [h2o]means 2 x 0.038=0.0768 moles of H
the number of moles of C and H is same.therefore the general formula is CnHn.
as mol weight is 26 the formula is C2H2
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the positive terminal is considered to have high potential than the negative terminal. As current flows 4m higher potential to lower potential, the direction of current is taken like that...
hope i helped u
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at 27o c 4.6 grams of N2O4 undergoes decomposition and exerts an equilibrium pressure of 1.6 atm when vapourised in a 1 lit flask.the fraction of N2O4 dissociated is [N2O4---->2NO2]reversible reaction.
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whats ment by enantiotrophy
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whats this answer.please solve it
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what is the standard formula to find sum in arithmetico geometric series
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1+cos 2 +cos 3+cos 4+.........=4+  3 if 0< <90. then = |
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if a certain number is divided by X the remainder is P.if it is divided by Y the remainder is Q.then what is the remainder when the number is divided by XY
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