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Explain the term 'critical frequency' in relation to sky wave propagation of electromagnetic waves.
On a particular day, the maximum frequency reflected from the ionosphere is 10 MHz on another day, it was found to reduce to 8 MHz calculate the ratio of the maximum electron densities of the ionosphere on the two days
Suppose that the Sun runs out of nuclear fuel and suddenly collapses to form a white dwarf star, with a diameter equal to that of the Earth. Assuming no mass loss, what would then
Two wattmeters indicate 10 kW and 3 kW respectively when linked to measure the input power to a 3-phase balanced load, the reverse switch being operated on the meter showing the 3k
Explain the term 'work function' of a metal. The threshold frequency of a metal is f 0 . When the light of frequency 2f 0 is incident on the metal plate, the maximum velocity of e
Question: A proton a absolutely charged elementary particle is released from rest at a point in space where the electric potential is 15 volts. Following to its release the par
(i) The size examines cannot be operated to derive relations other than product of power functions, for example, s = ut + 1/2 at 2 or y = y 0 cosωt and so on, cannot be derived
Describe electric current, mobility of charge and drift velocity carriers in a conductor.Derive the relation between drift velocity of charge carriers and electric current in a con
I don''t understand how pressure energy arises
Q. Show Constant Moment Arm? The simplest case is that of a point mass, and the moment of inertia can be immediately written as I = mR 2 ,
An unknown tuning fork is sounded along w/ a tuning fork whose frequency is 256Hz and a beat frequency of 3 Hz is heard. What i the frequency of the unknown tuning fork?
The simple equation E = mc² is not usually applicable to all these types of mass and energy, except in the special case that the total additive momentum is zero for the system unde
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