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What current flows through a 2.04 cm diameter rod of pure silicon that is 17.5 cm long, when 1000 V is applied to it? (Such a rod may be used to make nuclear particle detectors, for example.) The resistivity of pure silicon is 2.30 103 Ω · m.
The angular position of a point on the rim of a rotating wheel is given by θ = 8.0t- 3.0t2 +t3, where t is in seconds and θ is in radians. Determine the angular velocity at t= 5 sec
A rescue helicopter lifts a 79-kg person straight up by means of a cable. Use the work-energy theorem and find the final speed of the person
At one instant, a 19.0-kg sled is moving over a horizontal surface of snow at 5.00 m/s. find the magnitude of the average friction force acting on the sled while it was moving
question1the position of a particle moving along an x axis is given by x 12t2 - 2t3 where x is in meters and t is in
X-rays with wavelength of0, 71Å eject photoelectrons from a gold foil. The electrons form a circular path of radius r in a region where constant magnetic field B is present. Experiment shows that rB=1.88x10-4 Tesla-m. Discover the maximum kinetic ene..
A dam stands 12 ft high. It is 4 ft wide at the top and 10 ft wide at the base. The upstream face is vertical. The coefficient of friction between the darn.
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2.
The moon revolves aound the Earth in 27.3 days in nearly circular orbit with a radius of 3.8*10^8 m. what is the moon's centripetal acceleration
A 3.85 kg mass attached to a spring oscillates with a period of 0.355 s and an amplitude of 20.5 cm. find the maximum speed of the mass
There are two stable isotopesof the element Lithium. One of them has three neutrons and the other has four. All other isotopes are radioactive withshort half lives. Using the periodic table in the textbook,
Very fine smoke particles are suspended in air. The translational rms speed of a smoke particle is 2.8 x 10-3 m/s, Find the mass of a particle
an adventurous archaeologist crosses between two rock cliffs by slowly going hand-over-hand along a rope stretched
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