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A step down transformer (turns ratio 1:8) is utilized with an electric train to reduce the voltage from the wall receptacle to a value required to operate the train, when the train is running, the current in the secondary coil is 1.6A. What is the current in the primary coil?
What is the linear speed of the phonograph needle
A large window measures 1.7 m by 2.9 m. At what rate will heat be conducted through the window when the room temperature is 26 C and the outside temperature is -2 C if the window instead has a double pane of glass (a "thermopane"), in which each pane..
A current of 15.0 mA is maintained in a single circular loop with a circumference of 3.30 m. find the magnitude of the torque exerted by the magnetic field on the loop
a weather balloon with a volume of 270.0 l is launched at 20degrees c at sea level where the atmospheric pressure is
A 58.0 m length of insulated copper wire is wound to form a solenoid of radius 1.8 cm. The copper wire has a radius of 0.51 mm. What is the self-inductance of the solenoid
A plane is in a dive. At the bottom of the dive is the maximum acceleration on the pilot. what is the radius of the circular path
A magnetic-field technique for stabilizing a He-Ne laser to 2parts in 1010has been patented. At 632.8 nm, what would be the coherence length of a laser with such frquency stability
A ball is thrown with an initial speed of 60.0 m/s at an angle of 30 degrees above the horizontal. What is the balls vertical displacement at the end of 4.00 seconds
Four particles, each of mass 20.0 g, that form a square with an edge length of d = 0.800 m. what is the change in the gravitational potential energy of the four-particle system
A 45.5-g golf ball is driven from the tee with an initial speed of 47.3 m/s and rises to a height of 30.4 m. evaluate the kinetic energy of the ball at its highest point
Considering the equation for heat transfer through a wall, describe two simple ways to modify ahome to decrease the rate at which heat is lost through the walls.
A motorist drives along a straight road at a constant speed of 15.3 m/s. Now as she passes a parked motorcycle police officer, the officer starts to accelerate at1.5 m/s2 to overtake her. Assuming the officer maintains this acceleration; decide the t..
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