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A power line carries a 225-A current from east to west parallel to the surface of Earth.
1. What is the direction of the force?
2. In your judgment, would this force be significant in designing towers to hold these power lines?
3. What is the magnitude of the force resulting from Earth’s magnetic field acting on each meter of the wire?
Which is safer as a road material
Pulling a string on a bow back with a force of 22.8 lb, an archer prepares to shoot an arrow. find what is the tension in the string
Two microscope slides are placed one on top the other. They are in contact at one end but a hair separates them at the other end. What is the thickness of the hair
A three-way 240 V lamp bulb that contains two filaments is rated for 200-400-600 W. One filament burns out. Afterward, the bulb operates at the similar intensity (dissipates energy at the same rate) on its lowest as on its highest switch positions ho..
A boat whose speed in still water is 8 m/s, is directed across a river with a current of 6.0m/s. What is the speed of the boat as it crosses the river?
Two sqaures of wire like that of above are placed side by side on a table with a distance of 8 cm between the closest sides of the two sqaures, What is the resulting force between the two squares
question1a small object with a mass of 420 mg carries a charge of 40.0 nc and is pending by a thread between the
The x-position of a particle is given by the expression x(t)=(4.0 m)cos(4.0?t+ 5.0?) , where x is in meters and t is in seconds. What is the maximum velocity of the particle
If the frequency of oscillation of the wave emitted by an FM radio stationis 93.6 MHz, determine the wave's period of vibration
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 294 K. Determine the temperature of the well water
Three moles of a monatomic ideal gas are heated at a constant volume of 1.12 m3. The amount of heat added is 5.89 x 103 J. Determine the change in pressure
A 3.0 kilogram block slides with a speed of 1.1 m/s on a frictionless, horizontal surface until it encounters a spring. Determine what initial speed should the block have
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