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A step-up transformer has 50turns on the primary coil and 500 turns on the secondary coil. If this transformer is to produce an output of 4000 V with a 12 mA current, what input currentand voltage are needed?
4.60g of nitrogen gas at 22.0?c and an initial pressure of 3.30atm undergo an isobaric expansion until the volume has
Water flows though a 20mm diameter pipe at 3L/min and static pressure of 100mmHG. What is the wall stress of the pipe. The pipe is 1.5mm thick
If the string makes an angle of 29? with the vertical, find out the centripetal force experienced by the ball. The acceleration of gravity is 9.8 m/s2 .
A 1500-kg car starts from rest to reach 60.0 miles/h in 7.50 s. What is the engine's power output and How much work is done by the engine during the acceleration
To fill a child's inflatable wading pool you use a garden hose with a diameter of 2.9 cm. How long will it take to fill the pool to a depth of 19 cm if it is circular and has a diameter of 2.4 m
A 2.85 kg object is held in place on an inclined plane that makes an angle of 40 degrees with the horizontal. Calculate the initial acceleration of the system
the positive side of a 10v battery is connected to a 10 ohm resistor which is connected in series to a 20 ohm resistor
An 8.5- {rm kg} point mass and a 15- {rm kg} point mass are held in place 50- {rm cm} apart. A particle of mass m is released from a point between the two masses 19- {rm cm} from the 8.5-{rm kg} mass along the line connecting two fixed masses.
An artillery shell was fired at a 60 degree elevation on the top of a 150 m hill. The muzzle velocity of the shell was 275 m/s. Find the maximum height of the object
A ball m=1kg rolling without slipping on a flat surface with v=.1m/s strikes the wall after which v=.08m/s
Two identical uniform poles of mass 50 kg and linear mass density 15 kg/m are supported by pivots 2 m apart on level ground. what angle do the poles make with the vertical
An elevator is able to raise 9,800 N to a height of 22 m in 14 s. How much work does the elevator do
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