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A transformer with a turns ratio (secondary/primary) of 1:14 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.What is the voltage supplied to the recharger?
An electric wire that has a mass of 5 kg for a 20m length is strung between two poles 20 m apart. What should be the tension in the wire if it is to take 0.8 seconds for a pulse to travel along the wire from one pole to the other.
The observed frequency of a train whistle is 475Hz as it approaches a stationary observer and is 410Hz as it recedes
A ball of aluminum is at a depth of 100.0 m under water whose density is 1,000 kg/m3. The bulk stress on the ball due to the water is
Explain any advantages in using Conservation of Energy method to determine initial projectile velocity
You heat a 507 cm3 sample of a substance from 131 °C to 265 °C, Calculate the coefficient of volume expansion of this substance
Students hypothesized that by running the electric current through the wire of the apparatus shown here, they could cause the non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this.
Jack and a friend skiing in the colorado mountain. they first see an avalanche on mountain side 1.5 miles away from them. what is the power the avalanche is producing the sound
Two capacitors are connected in parallel across the terminals of a battery. One has a capacitance of 2.0 µF, What is the voltage of the battery
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.280 m. What is the electric potential on the surface
The deflection plates in an oscilloscope are 10 cm by 2 cm with a gap distance of 1 mm. A 100 volt potential difference is suddenly applied to the initially uncharged plates through a 950 ohm resistor in series with the deflection plates.
What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 16.5 V while a current of 7.50 A is charging it
a modern house is wired for 115 V, and the current is limited by circuit breakers to a maximum of 135 A. find the maximum electrical power the house can consume
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