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Q. Orbital Velocity for Low Earth Orbit
Neglecting air friction an object will sustain a low altitude orbit when the centrifugal force due to its motion in a circular orbit is equal to the gravitational force attracting it to earth.
Note that for these circumstances the centripetal force is provided by gravitation attracting the object toward the earth's centre. The reactive force directed absent from the earth is centrifugal.
A magnetizing force of 8000A/m is applied to a circular magnetic circuit of mean diameter 30cm by passing a current by a coil wound on the circuit. If the coil is uniformly wo
It is a measure of the extent up to which a material concentrates electrostatic lines of flux. It is the amount of the stored electrical energy when a potential is applied, relat
singularity: The center of a black hole, where the curvature of spacetime is maximum. At the singularity, the gravitational tides diverge; no solid object can even theoretical
AVERAGE ACCELERATION: The total change in velocity of a body separated by total time taken is known as average acceleration. It is denoted by a ? av or .
why value of g at center of earth is zero?
A ray of light XY strikes a surface of a mirror ABCD at point P. a) Determine the path of the incident ray X-Y-P and the reflected ray P-Z and show this path in all views. (Hin
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whta is three application of electrostyatics
Magnetic instruments are used to find out the magnetic moment of a bar magnet, find out the horizontal component of earth's magnetic field, compare the magnetic moments of two bar
Write down a short note on the discovery of neutron. Show the uses of radioisotopes.
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