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A television screen is illuminated using a beam of electronstraveling at 7.50×106 m/s in a1.75×10−2 T magnetic field. If an electron ismoving in the positive x direction and the magnetic fieldis oriented 55.0° from the z axis in the firstquadrant of the xz plane, what are the (a) magnitude and(b) direction of the acceleration of the electron?
On a day when the wind is blowing toward the south at 3 m/s, determine the resultant velocity (speed and direction) of the runner
One hundred turns of insulated copper wire are wrapped around an iron core of cross-sectional area 0.100 m2. find the average current in amperes that flows through the resistor
A bowling ball weighing 71.2 is attached to the ceiling by a 3.80 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured..
question1a cube of ice is taken from freezer at -8.3degc and placed in a 100 g aluminium calorimeter filled with 289 g
the hammer throw is a track-and-field event in which a 7.8-kg ball the hammer starting from rest is whirled around in a
How much of the rope must be pulled. Find the magnitude of the magnetic field at the point x = 0, y = 0.7 m, z = 0.
An air-filled toroidal solenoid has a mean radius of 15.1cm and a cross-sectional area of 4.95cm2, find the least number of turns that the winding must have
A man whose weight = 584N is doing pushups. His center of gravity is located 0.410m from where his hands tough the ground, Find the normal fource exerted by the floor on EACH hand
A disk with mass m = 8.5 kg and radius R = 0.35 m begins at rest and accelerates uniformly for t = 18.8 s, to a final angular speed of ? = 28 rad/s. What is the moment of inertia of the disk?
A converging lens produces a real image magnified 3 times that of an object. If the object is placed at 15 cm from the lens, calculate the focal length of the converging lens
Three silver wires of equal length are connected in series with a 1.50 V battery. Their cross-sectional areas are 1.00, 5.00 and 10.0 cm2. (a) What is the potential difference across the narrowest wire? (b) The medium wire? (c) The widest wire?
Two stars 19 light-years away are barely resolved by a 165 cm (mirror diameter) telescope. How far apart are the stars
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