Physics-
General
Easy
Question
A particle of mass 
is initially at rest. 
force acts on it whose magnitude changes with time. The force time graph is shown below,The velocity of the particle after 
is
The correct answer is:
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Here 
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A solid sphere of mass is resting inside a cube as shown in the figure. The cube is moving with a velocity Here is the time in scond. All surfaces are smooth. The sphene is at rest with respect to the cube. what is the total force exerted by the sphene on the cube (g=10ms-2) )
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Oxygen has an oxidation state of +2 in the compound
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In the reaction, 2FeSO4 + H2SO4 + H2O2 ® Fe2 (SO4)3 + 2H2O) the oxidizing agent is
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A lift is going up. The total mass of the lift and the passenger is 1000 kg The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t= 10.5sec will be
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physics-General
Maths-
If 
is a homogeneous function of order 
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I) 
II) 
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We have to remember all the three results instead of deriving them.
If is a homogeneous function of order .
I)
II)
III)
Which of the above statements is correct ?
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We have to remember all the three results instead of deriving them.
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physicsGeneral
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A reduction in atomic size with increase in atomic number is a characteristic of elements of
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A satellite moves in a circle around the earth, the radius of this circle is equal to one half of the radius of the moon's orbit the satellite completes one revolution in
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Two satellites A and B go round a planet in circular orbits having rarely 4 R and If the speed of satellite A is 3V, then speed of satellite B is
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The yellow coloured solution of salt of chromate ions change to orange colour on acidification due to the formation of
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A person sitting in a chair in a satellite feels weightless because
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The time period of a satellite of earth is 5 hours If the separation between the earth and the satellite is increased to four times the previous value, the new time period will become ...... Hours
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physicsGeneral
