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Search results
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A2 Physics | Post your doubts here
exactly! the amplitude is not given so dont worry about the amplitude ! -
A2 Physics | Post your doubts here
open this link .AM graph is like this https://ccrma.stanford.edu/~jos/st/img494.png the time for each individual peak is of the carrier frequency and the time for one large peak to the other large peak is of the information signal -
A2 Physics | Post your doubts here
just draw two LEDs one with forward direction and one reversed connected from the input to the earth . the forward biased LED is of red light and the reversed biased LED is green -
A2 Physics | Post your doubts here
no . have you seen an AM signal graph ? -
A2 Physics | Post your doubts here
(a) when it would be parallel(horizontal) the magnetic field strenght would pass through it for a longer distance (2.8cm) .when it is perpendicular magnetic field strength passes through for a very short distance which is thickness of the coil. (b)(i) torque = force x distance 2.1 x 10^3 = F... -
A2 Physics | Post your doubts here
jut draw a AM signal graph with modulating frequency of 5kHz(200us) and carrier frequency of 50KHz(20us) -
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A2 Physics | Post your doubts here
there is no centripetal force on the poles so the normal reaction would be less . -
A2 Physics | Post your doubts here
frequency varies 20Khz V-1 . so total variation is 20 x 1.5 = 30KHz. max frequency is 530KHz and min frequency is 470kHz -
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A2 Physics | Post your doubts here
can you post the link or the image of the graph? -
A2 Physics | Post your doubts here
we have to find the gravitational field strength at 0.5r above the surface so total distance= 1.5r (because we add the total distance from the centre to the surface and the distance above the surface) so total distance = 1.5 x (6.4x10^6) understand ? -
A2 Physics | Post your doubts here
lol pakistan standard time :P im in lahore paper will start at 9 am tomorow -
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A2 Physics | Post your doubts here
we have to make a total capacitance of 4500 so two series capacitors parallel to two other series capacitors . the safe working voltage is 6V but the circuit has 8V but according to the arrangement each capacitor would get 4V so it would be fine . get it ? -
A2 Physics | Post your doubts here
according to the definition E would be opposite to the direction of current hence the direction of E. in the first interval I is zero so E zero . in the second interval I is changing so E induced but I is reducing because gradient is decreasing so E would also decrease hence the curve for E with... -
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A2 Physics | Post your doubts here
the geostationary satellites dont cover the polar regions .. but for GPS we need a satelite in the polar regions so thats why geostationary are not used .. -
A2 Physics | Post your doubts here
np . its quite simple you just have to see it right ! -