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A molecule in a gas container hits a horizontal wall with speed 200 m s^−1 and angle 30 degree with the normal, and rebounds with the same speed. Is momentum conserved in the collision ? Is the collision elastic or inelastic ?
30
Oct
A molecule in a gas container hits a horizontal wall with speed 200 m s^−1 and angle 30 degree with the normal, and rebounds with the same speed. Is momentum conserved in the collision ? Is the collision elastic or inelastic ? A molecule in a gas container hits a horizontal wall with speed 200 [...]
A rain drop of radius 2 mm falls from a height of 500 m above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. What is the work done by the gravitational force on the drop in the first and second half of its journey? What is the work done by the resistive force in the entire journey, if its speed on reaching the ground is 10 ms^–1?
30
Oct
A rain drop of radius 2 mm falls from a height of 500 m above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height, it attains its maximum (terminal) speed, and moves with uniform speed thereafter. What is the work done by the gravitational [...]
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a motorist follows a track that turns to his left by an angle of 60° after every 500 m. Starting from a given turn ,
A rain drop of radius 2 mm falls from a height of 500 m above the ground. It falls with decreasing acceleration (due to viscous resistance of the air) until at half its original height ,
it attains its maximum (terminal) speed ,
On an open ground ,
sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case. ,
specify the displacement of the motorist at the third ,
An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster the electron or the proton? Obtain the ratio of their speeds. (electron mass = 9.1×10^−31 kg, proton mass = 1.67×10^−27 kg,1eV = 1.6×10^−19 J)
30
Oct
An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster the electron or the proton? Obtain the ratio of their speeds. (electron mass = 9.1×10^−31 kg, proton mass = 1.67×10^−27 kg,1eV = 1.6×10^−19 J) 1eV = [...]
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1eV = 1.6×10^−19 J) ,
An electron and a proton are detected in a cosmic ray experiment ,
and the second with 100 keV. Which is faster the electron or the proton? Obtain the ratio of their speeds. (electron mass = 9.1×10^−31 kg ,
proton mass = 1.67×10^−27 kg ,
the first with kinetic energy 10 keV ,
A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F = – i ^ + 2 j ^ + 3 k ^ N where i ^ , j ^, k ^ are unit vectors along the x, y and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4 m along the z-axis ?
30
Oct
A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F = – i ^ + 2 j ^ + 3 k ^ N where i ^ , j ^, k ^ are unit vectors along the x, y and z-axis of the system [...]
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A body constrained to move along the z-axis of a coordinate system is subject to a constant force F given by F = - i ^ + 2 j ^ + 3 k ^ N where i ^ ,
j ^ ,
k ^ are unit vectors along the x- ,
y- and z-axis of the system respectively. What is the work done by this force in moving the body a distance of 4 m along the z-axis ? ,
A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to
30
Oct
A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to October 30, 2020 Category: Chapter 5 - Work, Energy and Power [...]
A spring mass system performs SHM. If the mass is doubled keeping amplitude same, then the total energy of SHM will become
30
Oct
A spring mass system performs SHM. If the mass is doubled keeping amplitude same, then the total energy of SHM will become A spring mass system performs SHM. If the mass is doubled keeping amplitude same then the total energy of SHM will become October 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
The displacement of a particle is given by r = A( i cosωt+ j sinωt). The motion of the particle is :
30
Oct
The displacement of a particle is given by r = A( i cosωt+ j sinωt). The motion of the particle is : The displacement of a particle is given by r = A( i cosωt+ j sinωt). The motion of the particle is : October 30, 2020 Category: Cengage NEET by C.P Singh , Chapter [...]
A block is resting on a piston which executes simple harmonic motion in vertical plain with a period of 2.0 s in vertical plane at an amplitude just sufficient for the block to separate
30
Oct
A block is resting on a piston which executes simple harmonic motion in vertical plain with a period of 2.0 s in vertical plane at an amplitude just sufficient for the block to separate A block is resting on a piston which executes simple harmonic motion in vertical plain with a period of 2.0 s [...]
A graph of the square of the velocity against the square of the acceleration of a given simple harmonic motion is
30
Oct
A graph of the square of the velocity against the square of the acceleration of a given simple harmonic motion is A graph of the square of the velocity against the square of the acceleration of a given simple harmonic motion is October 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
The figure shows the variation of force acting on a particle of mass 400 g executing simple harmonic motion. The frequency of oscillation of the particle is
30
Oct
The figure shows the variation of force acting on a particle of mass 400 g executing simple harmonic motion. The frequency of oscillation of the particle is The figure shows the variation of force acting on a particle of mass 400 g executing simple harmonic motion. The frequency of oscillation of the particle is October [...]