A ball of mass m moving at a speed v makes a head on collision with an identical ball at rest . The kinetic energy of the balls after the collision is three fourths of the original . Find the coefficient of restitution 1. ๐‘ฃ/(โˆš3) 2. โˆš3 3. (โˆš3)/(โˆš2) 4. (โˆš2)/(โˆš3)

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Kirchhoff law problem and equivalent resistance

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1. using Kirchhoff law find the current in following branch answer     AB:(5/8) A, CA: (5/2) A, DEB: (15/8) A AD: (15/8) A, CD: 0 A, BC: (5/2) A 2.  using Kirchhoff law find the current in following branch   Answer  current in branch AB= (4/17) A In branch BC = (6/17) A In branch CD = (4/17) A In branch AD= (6/17) A In branch BD = (-2/17) A Total Current =(4/17) +(6/17)+(-4/17)+(6/17)+(-2/17)=(10/17) A 4. find R Equivalent 
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Two rigid boxes containing different ideal gases are placed on a table . Box A contains one mole of nitrogen at temperature ๐‘‡_๐‘œ , while box B contains one mole of helium at temperature 7/3 ๐‘‡_๐‘œ . The boxes are then put into thermal contact with each other and heat flows between them until the gases reach a common final temperature (ignore the heat capacity of boxes and heat exchange will happen only between boxes ) . Then the final temperature of the gases in terms of ๐‘‡_๐‘œ is 7/3 ๐‘‡_๐‘œ 3/2 ๐‘‡_๐‘œ 5/2 ๐‘‡_๐‘œ 3/7 ๐‘‡_๐‘œ

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error analysis objective questions dpp

NEXT TOPPER INSTITUTE  FOR YOU  1.     In an experiment the percentage of error occurred in the measurement of physical quantities A,B,C and D   are 1% ,2%, 3% and 4% respectively . then the maximum percentage of error in the measurement x where x =A 2 B 1/2 /c 1/3 D 3 will be                                             NEET 2019 a.      10%                b. 3/13%                c.   -10%                                d. 16% 2.   ...
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