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A conducting spherical shell of radius R is cut in half. The two hemispherical pieces are electrically separated from each other but are left close together, so that the distance separating the two halves may be neglected. The upper half is maintained at Phi=Phi0 and the lower half is maintained at phi=0. Find the electrostatic potential phi at all points in space outside of the surface of the conductors. You may neglect 1/r^4.
The resistance and the magnitude of the current depend on the path that the current takes. Find the current in each case
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
You pull downward with a force of 25 N on a rope that passes over a disk-shaped pulley of mass 1.3 kg and radius 0.075 m. Find the linear acceleration of the 0.66-kg mass
The potential at the center of a 2 centimeter diameter copper sphere is 900 Volt, relative to V=0V at infinity. Determine how much excess charge is on the sphere
Some European trucks run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 370 ? rad/s. If the truck uses an average power of 7.7 kW, for how many minutes can it operate between chargings
A 4.7-g bullet leaves the muzzle of a rifle with a speed of 334 m/s. What force (assumed constant) is exerted on the bullet
A 70kg man walks out on a 10kg beam that rests on, but is not attached to, two supports. When beam just starts to tip, what is the force exerted on the beam by the right support.
A laser that emits pulses of UV lasting 3.65 ns has a beam diameter of 1.60 mm. What is the maximum electric field strength in this pulse
A car traveling at 55 km/h hits a bridge abutment. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has a mass of 39 kg
A sound wave of frequency 850 Hz propagating through air has apressure amplitude of 6.5 Pa. What are the (a) Wavelength, Particle displacement amplitude
Some bacteria are propelled by biological motors that spin hair-like flagella. What is the angular speed (the magnitude of the angular velocity) of this bacterial motor
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.1 kg and 3.76 10-3 m3. Find the mass of the gold in the rock
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