Physics
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Question
A granophyre record is revolving with an angular velocity 
. A coin is placed at a distance r from the center of the record. The coefficient of static is. The coin will revolve if
The correct answer is:
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General
A shell of mass 200g is ejected from a gun of mass 4 kg by an explosion that generates 1.05KJ of energy. The initial velocity of the shall is
A shell of mass 200g is ejected from a gun of mass 4 kg by an explosion that generates 1.05KJ of energy. The initial velocity of the shall is
GeneralGeneral
chemistry-
The oxidation states of S atoms in 
from left to right respectively are
The oxidation states of S atoms in from left to right respectively are
chemistry-General
General
A 0.5 kg ball moving with a speed of 12ms- 1strikes a hand wall at an angle of 300 with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for. 0.025 s the average force acting on the wall is
A 0.5 kg ball moving with a speed of 12ms- 1strikes a hand wall at an angle of 300 with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for. 0.025 s the average force acting on the wall is
GeneralGeneral
maths-
Two forces, each numerically equal to 5 N, are acting as shown in the fig. Then the resultant is -
Two forces, each numerically equal to 5 N, are acting as shown in the fig. Then the resultant is -
maths-General
physics
Two masses M and M/2 are joined to gether by means of light inexcusable string passed aver Z, fiction pulley as shown in fig. When the bigger mass is rekasod, the small and will ascend with an acceleration
Two masses M and M/2 are joined to gether by means of light inexcusable string passed aver Z, fiction pulley as shown in fig. When the bigger mass is rekasod, the small and will ascend with an acceleration
physicsGeneral
biology
Mark the correct sequence -
Mark the correct sequence -
biologyGeneral
physics
Two bodies of equal masses revolve in circular orbits of radii R1 and R2 will the same period Their centripetal forces are in the ratio.
Two bodies of equal masses revolve in circular orbits of radii R1 and R2 will the same period Their centripetal forces are in the ratio.
physicsGeneral
physics
A given object takes n times more lime to slide down 450 roagh inclin a practly smooth incline. The cofficient of kinetic function between the object and the incline is
A given object takes n times more lime to slide down 450 roagh inclin a practly smooth incline. The cofficient of kinetic function between the object and the incline is
physicsGeneral
physics
A car travelling at a speed of 30kmh is bought to a halt in 8 metros by applying brakes. If the same car is travelling at 60kh it can be bought to a halt with the same breaking power in
A car travelling at a speed of 30kmh is bought to a halt in 8 metros by applying brakes. If the same car is travelling at 60kh it can be bought to a halt with the same breaking power in
physicsGeneral
physics
A 7 kg object is subject to two forces (in newton) 
30j and 
The magnitade of resulting acceleration in ms-2 will be
A 7 kg object is subject to two forces (in newton) 30j and The magnitade of resulting acceleration in ms-2 will be
physicsGeneral
physics
A block of mass 4 kg is placed on a rough horizontal plane. A time dependent force F=Kt2 acts on a block, when 
of friction between the block and the plane at t=2s is.....
A block of mass 4 kg is placed on a rough horizontal plane. A time dependent force F=Kt2 acts on a block, when of friction between the block and the plane at t=2s is.....
physicsGeneral
physics
A particle of mass 2 kg is initially at rest. A force acts on it whose magnitude changes with time. The force time graph is shown below The velocity of the particle after 10s is
A particle of mass 2 kg is initially at rest. A force acts on it whose magnitude changes with time. The force time graph is shown below The velocity of the particle after 10s is
physicsGeneral
physics-
For the figure
For the figure
physics-General
physics
A solid sphere of mass 2 kg is resting inside a cube as shown in the figure. The cube is moving with a velocity 
Here is the time in second. All surfaces are smooth. The sphere is at rest with respect to the cube. what is the total force exerted by the sphere on the cube(g=10ms-2)
A solid sphere of mass 2 kg is resting inside a cube as shown in the figure. The cube is moving with a velocity Here is the time in second. All surfaces are smooth. The sphere is at rest with respect to the cube. what is the total force exerted by the sphere on the cube(g=10ms-2)
physicsGeneral
physics-
A projectile A is the thrown at an angle of 
to the horizontal from point P. At the same time, another projectile B is thrown with velocity 
upwards from the point Q vertically below the highest point. For B to collide with A, 
should be-
A projectile A is the thrown at an angle of to the horizontal from point P. At the same time, another projectile B is thrown with velocity upwards from the point Q vertically below the highest point. For B to collide with A, should be-
physics-General
