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1. The Q-factor of a resonance circuit is defined as the ratio of the voltage across the capacitor (or inductor) to the voltage across the resistor, at resonance. The larger the Q-factor, the sharper the resonance curve will be and the sharper the tuning. Show that the Q-factor is given by the equation: Q = 1/R.√L/C . At resonant frequency fo = 1 MHz, what must be the value of L and R to produce a Q-factor of 1000? Assume that C = 0.01 μF
An electric vehicle starts from rest and accelerates at a rate of2.6 m/s2 in a straight lineuntil it reaches a speed of 20 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 untilit stops. How much time elapses from start tostop?
lithium has two stable isotopes 6li and 7li. if a sample is composed of 39 of the lighter isotope with the balance
A 3.2 kilogram block is hanging stationary from the end of a vertical spring that is attached to the ceiling. Determine the elastic potential energy of the system
A 45.0 kilogram girl is standing on a 159 kilogram plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. Find the velocity of the plank relative to the surface of ice
A bullet of mass 0.014 kg and initial speed 440 m/s penetrates an initially stationary wooden block with a of mass 0.44 kg and lodges in it. How much mechanical energy was lost during the collision
A 3.2-cm-diameter parallel-plate capacitor has a 2.2mm spacing. The electric field strength inside the capacitor is 1.5 × 105 V/m. How much charge is on each plate
The moment of inertia of a sphere (rotating about a diameter( is given as I (sphere)=2/5MR^2 and the moment of inertia of a disk (rotating about its center) is given as I (disk)=1/2MR^2. which will reach the bottom first
Two long, parallel wires are separated by a distance of 2.1 cm. What is the current in the second wire? Express the answer with two decimal places
If 0.2 kg of chai tea at 90 degrees C is poured into a 0.3 kg cglass cup(C=840 J/kg K) at 20 degrees C, what is the final temperature of the chai tea
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.66 V, What emf and current are induced in the square coil
q1. throughout a hard sneeze your eyes may shut for 0.41 s. if you are driving a car at 98 kmh during such a sneeze how
The spring shown is compressed 50 cm and used to launch a 100-kg physics student. The track is frictionless until it starts up the incline. How far up the incline does the student go
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