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A cylindrical aluminum rod, with an initial length of 0.8200 m and radius 1200.0 µm, is clamped in place at one end and then stretched by a machine pulling parallel to its length at its other end. Assuming that the rod's density (mass per unit volume) does not change, find the force magnitude that is required of the machine to decrease the radius to 1199.9 µm. (The yield strength is not exceeded.)
q1. 1. a wide long insulating belt has a uniform positive charge per unit area sigma on its upper surface. rollers at
A 0.10-kg object with a velocity of 0.20 m/s in the +x direction makes a head-on elastic collision with a 0.15 kg object initially at rest
A white light beam shines directly on a very thin oil film that floats on water, where the incident beam normal to the surface. Find the wavelength and color of the light
A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 35o from the vertical. At what angle above the horizon does the friend see the sun
Biologically usefull technetium nucleuii (at wt 99) have half life of 6 hours. A solution containing 10^-12 gram of this is injected into the bladder of a patient.
A circular coil 18.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
A 75-kg man is riding in a 75-kg cart at 1.0 m/s. He jumps off in such a way as to land on the ground with no horizontal velocity
A lead bullet initially at 26.4oC melts just upon striking a target. calculate the speed of the bullet upon impact
A wire has a resistance of 60.0 ohms, and is bent into a square loop with sides of length 15.0 cm. The loop is perpendicular to a magnetic field which is changing at a rate of 4.000e-3 T/s. What is the current induced in the wire?
A conservative force, f(x) = -2x+3x4 is applied to a mass m (f in Newtons and x in meters). what is the change in the potential energy of mass
An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.43 m/s. What is the car's speed after the loading is completed
A current of 0.105 mA flows in a silver wire whose cross-sectional area is 0.930 mm2. Find the density of electrons in the wire, assuming that there is one conduction electron per silver atom
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