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A horizontal power line carries a current of 4880 A from south to north. Earth's magnetic field (75.1 µT) is directed toward the north and is inclined downward at 52.0° to the horizontal. Discover the magnitude of the magnetic force on 110 m of the line due to Earth's field.
A 38 g bullet is fired with a speed of 180 m/s into a 5 kg sandbag pendulum that is free to swing. To what maximum vertical height will the pendulum rise.
Two cars collide at an intersection. Car , with a mass of 1900 kg , is going from west to east, while car B , of mass 1300 kg , is going from north to south at 16.0 m/s. How fast were the enmeshed cars moving just after the collision
A 5.00 kg block carrying a charge Q=60.0?C is connected to a spring for which k=100N/m (see diagram below). The block lies on a frictionless horizontal track, What is the equilibrium position of the block
A magnetic feild has a magnitude of 1.2x10^-3 T, and an electric feild has a magnitude of a 4.6x10^3 N/C. Both feilds point in the same direction. A positive 1.8μC charge moves at a speed of 3.1 x10^6 m/s in a direction that is perpendicular to bo..
Four horses are tethered at 4 corners of a square field of side 70 metres so that they just cannot reach one another. What is the area left ungrazed by the horses
a block of 2.7 kg slides was moving with a speed of 1.0 ms on a frictionless horizontal surface until it encounters a
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
A bar-shaped piece of silicon at room temperature is one inch inlength and has a 100 μm2 cross-sectional area (i.e. 10x10μm). It is doped with phosphorous to a concentration of1017/cm3. Find the electrical current through the bar when avoltage of ..
what is the direction of the electric field along the positive z semi-axis vertical if the field is created bya a
A diver releases an air bubble of volume 2.0cm3from a depth of 16m below the surface of a lake, What is the volume of the bubble when it reaches just below the surface of the lake
Find out the magnitude and direction of forces
A strip of copper 10 mm wide and 900µm thick is placed in a uniform magnetic field B vec of magnitude 0.30 T, with B vec perpendicular to the strip. A current i = 23 A is then sent during the strip such that a Hall potential dissimilarity V appears a..
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