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A proton travels through uniform magnetic and electric fields.The magnetic field is B = -2.50i mT. At one instant the velocity ofthe proton is v=2000j m/s. At that instant and in unit-vectornotation, what is the net force acting on the proton if theelectric field is
(a) 4.00kV/m
(b) -4.00k V/m and
(c) 4.00iV/m?
Mario is watching Luigi fly past in a spaceship at 1.63×108 m/s. How long does an hour on the ship last, according to Luigi
A coaxial cable has a capacitance of 3.0 pF. The inner conductor has a radius of 1.0 mm, Find the length of the cable
A 40.0-N crate starting at rest slides down a rough 6.00-m-long ramp, inclined at 30.0° with the horizontal. What is the speed of the crate at the bottom of the incline
A rescue helicopter lifts a 70.8-kg person straight up by means of a cable. What is the tension in the cable
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of the chamber
A 55-kg mass ice skater standing stationary on very slipper ice (negligible friction) throws a 0.45 kg baseball with a speed of 27 m/s in the horizonatal direction
Miles Tugo is camping in Glacier National Park. In the midst of a glacier canyon, he makes a loud holler. He hears an echo 1.22 seconds later. How far away are the canyon walls
A hollow ball is rolling along a horizontal surface at 3.2m/s when it encounters an upward incline. If it rolls without slipping up the incline
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.06 × 106 m/s, Find the centripetal acceleration of the electron
A magnifier used for reading small print is shaped like a hemisphere 2.0 cm in radius, placed on top of a cylinder of the same radius, Where does the image of the print appear to be
Each of the following objects has a radius of 0.174 m and a mass of 2.79 kg, Find the magnitude of the angular momentum of each object
On a banked race track, the smallest circular path on which cars can move has a radius of 111 m, while the largest has a radius 153 m, Find the smallest speed at which cars can move on this track without relying on friction
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