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A long straight wire has fixed negative charge with a linear chargedensity of magnitude 3.6 nC/m. The wire is to be enclosedby a coaxial, thin-walled, nonconducting cylindrical shell ofradius 1.5 cm. The shell is tohave positive charge on its outside surface with a surface chargedensity σ that makes the net externalelectric field zero. Calculate σ.
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
A man does 4,735 J of work in the process of pushing his 2.70 103 kg truck from rest to a speed of v, over a distance of 25.0 m. determine the horizontal force exerted on the truck
An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction
John takes off for Vega (d ~ 25LY) traveling at 99.99% the speed of light. As soon as he arives, the ship turns around, How old are they when John returns
Two different simple harmonic oscillators have the same natural frequency (f=9.50 Hz) when they are on the surface of the Earth. Calculate the new frequency of the vertical spring and mass
A football is kicked at ground level with a speed of at an angle of 35.0º to the horizontal. How much later does it hit the ground
A centrifuge in a medical laboratory is switched on and rotates through 3900 revolutions. determine the final angular speed of the centrifuge
A wave traveling along the x axis is described mathematically by the equation y = 0.17sin(8.1?t + 0.82?x), What is the speed of the wave
questionexactly 3.0s after a projectile is fired into the air from a flat ground it is observed to have velocity v
A large electromagnet has a 23 T magnetic field between its poles. What is the magnetic energy density between the poles
A woman stands at the edge of a carousel that is rotating without friction at 0.80 rad/s. The carousel has a radius of 2.0m and a moment of inertia of 600 kg m2. What is now the angular speed of the carousel
An electron with mass 9.11×10-31 kg moves with a speed of 2.00×106 m/s in a circle of 2.83 cm radius under the influence of a magnetic field. What is the radius of the proton's orbit
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