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A body dropped from the top of a tower covers a distance 7x in the last second of its journey, where x is the distance covered in first second. How much time does it takes to reach the ground?
05
Sep
A body dropped from the top of a tower covers a distance 7x in the last second of its journey, where x is the distance covered in first second. How much time does it takes to reach the ground? A body dropped from the top of a tower covers a distance 7x in the last [...]
Figure shows two small bar magnets having dipole moments M1 and M2 placed at separation r. Find the magnetic interaction energy of this system of dipoles for d<<r.
05
Sep
Figure shows two small bar magnets having dipole moments M1 and M2 placed at separation r. Find the magnetic interaction energy of this system of dipoles for d<<r. Figure shows two small bar magnets having dipole moments M1 and M2 placed at separation r. Find the magnetic interaction energy of this system of dipoles for [...]
A beam of charged particle, having kinetic energy 10^3eV, contains masses 8×10^−27kg and 1.6×10^−26kg emerge from the end of an accelerator tube. There is a plate at distance 10^-2m from the end of the tube and placed perpendicular to the beam.
05
Sep
A beam of charged particle, having kinetic energy 10^3eV, contains masses 8×10^−27kg and 1.6×10^−26kg emerge from the end of an accelerator tube. There is a plate at distance 10^-2m from the end of the tube and placed perpendicular to the beam. A beam of charged particle contains masses 8×10^−27kg and 1.6×10^−26kg emerge from the end [...]
A train 100 m long travelling at 40 m/s starts overtaking another train 200 m long travelling at 30 m/s. The time taken by the first train to pass the second train completely is:
05
Sep
A train 100 m long travelling at 40 m/s starts overtaking another train 200 m long travelling at 30 m/s. The time taken by the first train to pass the second train completely is: A train 100 m long travelling at 40 m/s starts overtaking another train 200 m long travelling at 30 m/s. The [...]
A magnetic dipole of magnetic moment M is suspended by a string in a uniform horizontal magnetic field as showo in figure. If in horizontal plane this dipole is slightly tilted and released, show that it will execute simple harmonic motion and find its oscillation period. Consider the dipole as a uniform rod of mass m and length I.
05
Sep
A magnetic dipole of magnetic moment M is suspended by a string in a uniform horizontal magnetic field as showo in figure. If in horizontal plane this dipole is slightly tilted and released, show that it will execute simple harmonic motion and find its oscillation period. Consider the dipole as a uniform rod of mass [...]
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A magnetic dipole of magnetic moment M is suspended by a string in a uniform horizontal magnetic field as showo in figure. If in horizontal plane this dipole is slightly tilted and released ,
show that it will execute simple harmonic motion and find its oscillation period. Consider the dipole as a uniform rod of mass m and length I. ,
A stone is dropped from the top of a tower of height h. After 1 s another stone is dropped from the balcony 20 m below the top. Both reach the bottom simultaneously. What is the value of h? Take g = 10 ms^−2
05
Sep
A stone is dropped from the top of a tower of height h. After 1 s another stone is dropped from the balcony 20 m below the top. Both reach the bottom simultaneously. What is the value of h? Take g = 10 ms^−2 A body is released from the top of a tower of [...]
A charged particle of mass m and charge q is accelerated through a potential difference of V volts. It enters a region of uniform magnetic field which is directed perpendicular to the direction of motion
05
Sep
A charged particle of mass m and charge q is accelerated through a potential difference of V volts. It enters a region of uniform magnetic field which is directed perpendicular to the direction of motion An α−particle is accelerated by a potential difference of 10^4V. Find the change in its direction of motion if it [...]
Calculate the work done in rotating a magnet of magnetic moment 3⋅0 J T^−1 through an angle of 60∘ from its position along a magnetic field of strength 0⋅34×10^−4 T.
05
Sep
Calculate the work done in rotating a magnet of magnetic moment 3⋅0 J T^−1 through an angle of 60∘ from its position along a magnetic field of strength 0⋅34×10^−4 T. Calculate the work done in rotating a magnet of magnetic moment 3⋅0 J T^−1 through an angle of 60∘ from its position along a magnetic [...]
A body is released from the top of a tower of height H m. After 2 s it is stopped and then instantaneously released. What will be its height after next 2 s ?
05
Sep
A body is released from the top of a tower of height H m. After 2 s it is stopped and then instantaneously released. What will be its height after next 2 s ? A body is released from the top of a tower of height H m. After 2 s it is stopped and [...]
A thief is running away on a straight road in a jeep moving with a speed of 9 ms^−1. A policeman chases him on a motor cycle moving at a speed of 10 ms^−1. If the instantaneous separation of the jeep and the motor cycle is 100 m, how long will it take for the policeman catch the thief?
05
Sep
A thief is running away on a straight road in a jeep moving with a speed of 9 ms^−1. A policeman chases him on a motor cycle moving at a speed of 10 ms^−1. If the instantaneous separation of the jeep and the motor cycle is 100 m, how long will it take for the [...]