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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
Coulomb's law (C. de Coulomb) The primary law for electrostatics is analogues to Newton's law of universal gravitation. This states that the force among two point charges is p
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The time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meters/second is: a) 1.5 seconds b) 6 seconds c) 16.7 seconds d
For a reversible process involving ideal gases in a closed system, show that ΔS = C v ln(T 2 /T 1 ) for a constant volume process ΔS = C p ln(T 2 /T 1 ) for a constant pres
Explain New Terms for Describing Motion As mentioned in the last chapter, the mass of a cannonball is a measure of the amount of matter (in kilograms) that would balance agains
Magnifying Glass: A biconvex lens of short focal length and low power which forms a virtual and magnified image of an object placed with its focal length is known as magnifying
What are the Ultrasonic Cleaning Applications? Several of the Ultrasonic Cleaning applications are: a. Ultrasonic Cleaners into Scientific Labs Lab Glassware, Test Tubes,
two forces at right angle with each other have a resultant of 58kN, If one of the forces is 40kN find the magnitude of the other forces
Question: Resultant of two forces P & Q is R. If Q is doubled R is doubled while if Q is reversed R is again doubled. Show that P:Q:R=(2) 1/2 :(3) 1/2 :(2) 1/2 .
Problem The work done by a force as it acts on an object equals the force times the displacement times the cosine of the angle between the force and displacement vectors. a
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