In head on elastic collision of two bodies of equal masses, The velocities are interchanged The speeds are interchanged The momenta are interchanged The faster body speeds up and the slower body slows down

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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 𝑇_𝑜 , while box B contains one mole of helium at temperature 7/3 𝑇_𝑜 . 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 𝑇_𝑜 is 7/3 𝑇_𝑜 3/2 𝑇_𝑜 5/2 𝑇_𝑜 3/7 𝑇_𝑜

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current objective question for cbse, jee , neet class12 chapter 3

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NEXT TOP PER INSTITUTE Dpp current questions 1.      1.  How many electrons per second flow through the cross sectional of a conductor so that the conductor carries a current of 1 ampere? a.      6.00 x 10 16 /sec       b.       6.00 x 10 17 /sec          c.        6.00 x 10 19 /sec     d.  6.25 x 10 18 /sec .       2.     2.   In a discharge tube the number of hydrogen ions drifting across a cross section per second is 1.0 X 10 18 , while the number of electrons drifting in opposite direction across that of cross section is 2.7 x 10 18  per second . calculate the total current crossing the given cross section . a.        0.6 A                        ...
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