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A large electromagnet coil is connected to a 118 -Hz ac source. The coil has a resistance 450 ohms, and at this source frequency the coil has an inductive reactance 290 ohms.
a) What is the inductance of the coil?
b) What must the rms voltage of the source be if the coil is to consume an average electrical power of 810 W?
a long horizontal wire carries a current of 48 amps. A second wire, made of 2.5 mm diameter copper wire, determine direction of the current in the lower wire
As you sit facing your computer screen, electrons are directed from a source at the back of the computer toward you and are deflected by a magnetic field. Which direction must the magnetic field be oriented in order to direct the electrons to the ..
Two thin coils of radius 3 cm are 20 cm apart and concentric with a common axis, What is the vector magnetic field on the axis, halfway between the two loops
Suppose that a structure of arbitrary complexity has a number of forces applied to it (at various points) and yet is in static equilibrium. The principle of virtual work allows one to write an equation that relates the applied forces.
what are the magnitude and direction of its acceleration. A potential difference of 80 mV exists between the inner and outer surfaces of the cell membrane. The inner surface is negative relative to the outer surface. How much work is required to ej..
The distance between between the 1st and 10th minima of a double-slit system is 18 mm, find the wavelength of light generating the interference pattern
suppose light coming from the air strikes a rectangular slab of material with index of refraction 2.5 and incident angle 60 degree. At what angle from the normal will it leave the other side of the material?
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. Find the location of the point where the total electrid field is zero
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
A liquid is flowing through a horizontal pipe whose radius is 0.0216 m. What volume flow rate will keep the pressures in the two horizontal pipes the same
What is the image distance and What is the lateral magnification
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring constant of spring 1 is 205 N/m. Find the spring constant of spring 2.
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