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Questions

Physics

A spherical ball of radius 1 x 10 ^-4 m and of density 10⁴ kg/m³ falls freely under gravity through a distance h before entering a tank of water. If after entering the water, velocity of the ball does not change, find h. The coefficient of viscosity of water is 9.8 x 10 ^-6 N sec/m².

Chemistry

Multiple-Choice Question
Which of the following expressions correctly represents the relationship between the average kinetic energy of CO and N₂ molecules at the same temperature?
(a)

(CO) >

(N₂)
(b)

(CO) <

(N₂)
(c)

(CO) =

(N₂)
(d)Cannot be predicted unless volumes of the gases are given

Mathematics

Multiple Choice Question

If

then I equals

(a)
(b)
(c)
(d)	none of these

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