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An infinite conducting sheet lies in the xy plane. It has a width of 4.5 cm and a current density of 5200 A/m^2 in the negative direction. An election (m=9.11X10^-31 kg and q=-1.6X10^-19 moves parrallel to the sheet at a velocity of 2.5X10^6 m/s int he positive y direction and with an intial z-position of 4.0 cm.
a) WHat is the magnetic field strength at the position of the electron?
b) what is the direction of the force on the electron?
Two very thick equally-magmetized square plates of side 0.23m and of mass 20 g, Calculate the B field between the two plates, if the distance between them is 0.123 cm
You are doing exercises on a Nautilus machine in a gym to strengthen your deltoid (shoulder) muscles. If you have set the tension in the cable of the machine to 33.0 N on each arm, what is the tension in each deltoid muscle if you hold your outstre..
A uranium-fuelled research reactor has a cubic shape with sides of length 1.0 m. estimate the power out of the reactor in units of watts
a string stretched between two fixed ends vibrates in its second harmonic with a frequency f=2 Hz. if the velocity that links the frequency and wavelength is equal to 40 m/s, find the wavelength of the stationary wave
Unpolarized light of intensity 1.1 W/m^2 is incident on a polarizer. what is the intensity of the light that leaves the analyzer
A person pulls a toboggan for a distance of 41.7 m along the snow with a rope directed 24.3 ° above the snow, How much work is done on the toboggan by the tension force
Albert stands on a frictionless turntable, holding a bike wheel. Both Albert and the wheel are initially stationary. find the final angular momentum had by the rest of the system
To transmit only portions of an input wave lying on one side of an amplitude boundary, you would use a.
light ray is incident normally to the long face (the hypotenuse) of a 45° -45° -90° prism surrounded by air, Calculate the minimum index of refraction of the prism
How many electrons are transferred. What is the smallest thickness of a soap film that would appear black if illuminated with 490 light? imagine there is air on both sides of the soap film.
Two passenger trains A and B, each 220 m long, pass a 50 m long railroad platform in Winnepeg. The trains are moving in opposite directions at equal speeds of 0.670c with respect to the ground, What is the difference in arrival times
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.250uC on each plate. The plates are 0.600mm apart. What is the surface charge density on each plate
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