बताओ बताओ #shorts#matheducation25m

The dipole moment of a short bar magnet is 1.25 A-m^(2) . The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is

Find the magnetic force on a short magnet of magnetic dipole moment M_(2) due to another short magnet of magnetic dipole moment M_(1) .

Point P lies on the axis of a short magnetic dipole at a distance of 0.4 m from centre,point Q lies at a distance of 0.25 m from centre of the magnet and on the line inclined at 30^(@) with the axis of the magnet.The ration of magnetic potentials at P and Q is

The concentration of a reactant in solution falls from (i) 0.5 M to 0.25 M in 5 hourse and from (ii) 1.0 M to 0.25 M in 10 hours The order of reaction is

A bar magnet is put on the hanger of oscillation magnetometer and is made to oscillate in earth's magnetic field. Frequency of oscillation of bar magnet is found to be 3 Hz at a place where horizontal component of earth's magnetic field is 25 muT . Now a short magnet is placed to the north of magnetometer in such a manner that its North Pole points towards north. Distance of short magnet from the bar magnet hanging inside the magnetometer is 1 m. Frequency of oscillation now becomes 6 Hz. What is magnetic moment of short magnet?

Show that the wavelength of a 150 g rubber at a velocity of 50 m s^(-1) is short emopngh to be determine

The magnetic induction at a point distant 15 cm on the axis of a short bar magnet of moment 0.5 A m is