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Obtain what current flows through a 2.98 centimeter diameter rod of pure silicon that is 24.5 centimeter long, when 1000 Volt is applied to it? (Such a rod may be used to make nuclear particle detectors, for instance.) The resistivity of pure silicon is 2.30 103 Ω •m.
_______ A
The magnetic field of an electromagnetic wave in a vacuum is Bz=(2.5 microT)Sin(1.9*10^7 x-2(3.14)ft), where x is in m and t is in s. What is the wave's electric field amplitude
A 3.0 kg block slides along a frictionlesshorizontal surface with a speed of 7.0 m/s. After sliding adistance of 3.0 m, the block makes asmooth transition to a frictionless ramp inclined at an angle of40° to the horizontal.
A 110 kilogram horizontal beam is supported at each end. A 320 kilogram piano rests a quarter of the way from one end. Determine the vertical force on each of the supports
A satellite has a mass of 6480 kg and is in a circular orbit 6.12 x 104 m above the surface of a planet. The period of the orbit is 2.00 hours. What is the true weight of the satellite when it is at rest on the planet's surface
A bowling ball (mass = 7.2 kg, radius = 0.15 m) and a billiard ball (mass = 0.33 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A block of aluminum with mass 10.0 g absorbs 176 calories of heat energy as it is heated from 20.0 oC to 100. oC. How much heat does the aluminum release
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every time the fully charged capacitor loses 60.5% of its ..
The shuttle Galileo has experienced engine trouble on her approach to Star Fleet Command and has landed in San Francisco bay. Estimate what is her average density
An archer shoots a 2.0x10^-2 kg arrow at a target with a speed of 50 m/s. When it hits a target, it penetrates to a depth of 8.6x10^-2 m. What was the magnitude of the average force exerted by the target on the arrow?
Two identical pucks are on an air table. Puck A has an initial velocity of 2.0 m/s in the +x-direction. What is the speed and direction of puck B after the collision
describe free-body diagram for the mass. Calculate the tension in each part of the rope.
The coefficient of performance of a refrigerator is 4.70. The compressor uses 20.0J of energy per cycle. How much heat energy is exhausted per cycle
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