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An alternating voltage v=250sin800t volts is applied across a series circuit having a 30 resistor and 50µF capacitor. Calculate
(a) the circuit impedance,
(b) the current ?owing,
(c) the p.d. across the resistor,
(d) the p.d. across the capacitor, and
(e) the phase angle between voltage and current
If 10 joules of energy are required to move 5 coulombs of charge between two points, the potential difference between the two points is equal to how many volts? Ans: If 10 j
Length contraction (relativity of length) is the length of a body moving with a relativistic velocity v = c relative to an observer is contracted by a factor in the direction of m
The birghtness of objects past Neptune actually varies approximately as 1/d^4. Why is that the case?
Length contraction
You may find parts of this question similar to the \Landing on an Alien World" activity that we did some time ago in class. Start by opening the \Maze Game" activity. You can find
A sphere of mass m and radius r is on a smooth fixed inclined plane in equilibrium, if now the sphere is displaced by a small distance along the plane , what will be angular freque
A sled and its rider, with a total mass of 95 kg, are perched on top of a 25-m-tall hill. A second hill is 12 m tall (see the diagram below). The rider is given an initial push
Define the characteristics of Heterojunction laser. Heterojunction laser: The threshold current density for homojunction lasers is extremely large because of poor optical an
The cold filament resistance of a light bulb is 20.0). The bulb consumes 75 W when it is operating from a 120-V source. By what factor does the start-up current in the bulb
define hyperbola please
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