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The battery charger for an MP3 player contains a step down transformer with a turns ratio of 1:32 so that the voltage of 120V available at a wall socket can be used to charge the battery pack or operate the player. What voltage does the secondary coil of the transformer provide?
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.27 kg, and the wedge has a mass of 5.31 kg. what is the velocity of the wedge after the collision
An oscillating mass-spring system has the following:displacement x=10cm; linear speed v=-20m/s, and an acceleration a=-20 m/s^2 what is the period of oscillation of the system
An extreme skier, starting from rest, coasts down a mountain that makes an angle of 34.3 ° with the horizontal. How fast is she going just before she lands
The elementary particle called a muon is unstable and decays after 2.20 ?s, as observed in its rest frame, What lifetime do you observe for the muon
Two cars approaching each other collide and stick together after the collision. One car has a mass of 1820 kg and a speed of 30 km/h in the positive x direction. find the initial velocity of the second car
A 150 g ball and a 220 g ball are connected by a 36{rm cm}-long, mass less, rigid rod. The balls rotate about their center of mass at 130 rpm. What is the speed of the 150 g ball.
Heat is extracted from a certain quantity of steam at 100 degrees celsius. Thus the steam changes into ice at 0 degrees celsius. If this energy were used to accelerate the ice from rest, what would be the linear speed of the ice.
A transformer is designed to step down the 220V line voltage to 11V. how many turns should there be on the output coil
Compare the speed of sound following from that slope to the calculated speed of sound from the gas properties
A human hair is placed directly in front of the opening of a laser pointer. The light has a wavelength of 647.8 nm. Determine the approximate thickness of the hair
An inductor (L = 400 mH), a capacitor (C = 4.43 µF), and a resistor (R = 500 ?) are connected in series. Determine the phase angle by which the current leads or lags the applied voltage
A model airplane of mass 0.870 kg is flying at constant speed in a horizontal circle at one end of a 28.0 m cord and at a height of 17.0 m. What is the acceleration of the plane
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