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An ideal transformer has 255 loops in its primary coil and 125 loops in its secondary coil. If the primary voltage is 120 Vrms and the device connected to the secondary uses 100 W of power, what is the current in the secondary loop?
A train is moving parallel and adjacent to a highway with a constant speed of 33 m/s. What is the speed of the car just as it passes the train
An object is located 12.5 cm in front of a convex mirror, the image being 6.90 cm behind the mirror. How far in front of the mirror is the second object located
A 564 Hz sound wave travels through a substance. What is the speed of sound in the substance
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m
A swimmer runs horizontally off a diving board with a speed of 3.58 m/s and hits the water a horizontal distance of 1.79 m from the end of the board. How high above the water was diving board.
Explain the physics fundamental process that causes the scope ,rod, pith ball, etc to discharge when you touch it. what is conservative force according to the text book of Giancoli
Two thermally insulated reservoirs each contain 2 kg of water at temperatures of 80 °C and 20 °C respectively, Determine the find equilibrium temperature and find the change in entropy of the local universe in the mixing process
One cubic meter of water flowing over Niagara Falls in New York drops 96.6 meters. how much heat energy would the water have
In order to view the craters of the Moon, you construct a refracting telescope from a lens with focal length 92.3 cm as its objective and a 14.3-cm focal length lens as its eyepiece
Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 1 kHz. What beat frequency do you observe
The mass of the motor is four times the mass of the module. What is the speed (in km/h) of the command module relative to Earth just after separation?
In a cathode-ray tube, a beam of electrons is projected horizontally with a speed of 1.0x10^9 cm/s into a region between a pair of horizontal plates 2.00 cm long.
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