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The current density inside a long, solid, cylindrical wire of radius a is in the direction of the central axis and its magnitude varies with radial distance r from the axis according to J = br2, where b is a positive constant. Find the magnitude of the magnetic field as a function of distance r for (a) 0 ? r ? a and (b) r ? a. Express your answer in terms of the variables given and ?0.
Household wiring made of aluminum wire with cross-section area 3.1 x 10^-6 m^2 carries a current of 4.5 A. what is the power loss over 5.2 m of wire
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 4.88 sin(kx - 1.44×108 t) V/m, where x is measured in meters and t in seconds.
A house at the bottom of a hill is fed by a full tank of water 6.0 m deep and connected to the house by a pipe that is L = 83m long at an angle of ? = 67? from the horizontal. Determine the water gauge pressure at the house
Determine the absolute pressure at the bottom of a lake that is 50 m deep. Write yor answer correct to two decimal paces let Patm = 101,300 Pa
q1. under the influence of its drive force a snowmobile is moving at a constant velocity along a horizontal patch of
Unpolarized light with an average intensity of 750.0W/m2 enters a polarizer with a vertical transmissionaxis. What is the orientation angle of the second polarizer relative to the first one
A person on a bicycle accelerates at 2.0 m/s2 for 30 seconds. If the final velocity is 10 m/s, what was the cyclist's initial velocity
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 3 meters and a slope of 5 degrees with respect to the ground. What does this make the velocity of the box at the bottom
A child loses his balloon, which rises slowly into the sky. If the balloon is 23 cm in diameter as the child loses it, what is its diameter at the following altitudes? Assume that the balloon is very flexible and so surface tension could be neglec..
Three capacitors all have the same capacitance. When they are wired in series, the equivalent capacitance is 57 ?F. what would the charge on the capacitors be
A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 283 K and an absolute pressure of 3.31 x 105 Pa. How many moles of air must be pumped into the tire
A charged particle A exerts a force of 2.69 ?N to the right on charged particle B, when the particles are 14.0 mm apart. Particle B moves straight away from A to make the distance between them 17.0 mm. What vector force does it then exert on A?
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