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Question1
A step-up transformer has 270 turns on its primary coil and 90,000 turns on its secondary coil. The EMF of the generator to that the primary circuit is attached is 60.0 V.
a) what is EMF in the secondary circuit.
b) The current in a secondary circuit is 0.50 A. What current is in a primary circuit?
Question2
A hanging wire has a length of 1.90. When a steel ball of mass 57.0 is suspended from the wire, the wire stretches by 1.90 if the ball is pulled down a small additional distance and released, at what frequency will it vibrate? Suppose that tension on the wire is less than proportional limit.
A solenoid is to be constructed that will have a resistance of 5.00 ohms and produce a magnetic field of 0.0400 T at its center when it carries a current of 4.00 A. The solenoid will be made of wire that is 0.500 mm in diameter and have a radius that..
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
Explain how do the five forces of competition in an industry affect its profit potential?
Imagine two Einstein solids in thermal contact. A has 300 atoms and B has 200 atoms, and qtotal = 100, what is the equilibrium macrostate
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A monatomic ideal gas expands on a linear process such that P=3V + P1 ( initial pressure.) P1 and V1 are the initial pressure and initial volume
An unknown nucleus has twice the volume of a nucleus with 83 nucleons. What is the atomic mass number of the unknown nucleus
A roller coaster track has a hill with a circular curve of radius r =15 m. What is the normal force on the 60-kg passenger
Determine the magnitude (in mN) and direction (relative to the negative x-axis in degrees) of the force acting on a particle with charge q3 = +11 nC placed at the origin.
It is possible to return the current in the bulb to the value calculated in part (a) by adding an inductor in series with the bulb and the capacitor. What is the value of the inductance of this inductor
A 821 kg car is going 29 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads and rotors
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