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An aluminum ring needs to be placed over a cylinder steel bar. At 10.00 degrees C, the inside diameter of the ring is 4.000cm and the outer diameter of the bar is 4.040cm.
A) In order to slip the ring over the bar should the ring be heated or cooled? Explain.
B) Find the temperature of the ring at which it fits over the bar. The bar remains at 10.00 degrees C.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T. Calculate the magnitude of the torque on the loop
The meter stick in the drawing can rotate about an axis located at the 20.0-cm mark, Which force, F1 or F2, acts on the meter stick, and what is its magnitude
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
A 24.7cm diameter coil consists of 45 turns of circular copper wire 1.0mm in diameter. A uniform magnetic field, Determine the rate at which thermal energy is produced
A father racing his son has 1/4 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.5 m/s and then has the similar kinetic energy as the son.
Alpha particles (charge = +2e, mass = 6.68* 10^-27 kg) are accelerated in a cyclotron to a final orbit radius of 0.50 m. Determine the kinetic energy of an alpha particle in the final orbit
Suppose the barrel has a length of 0.511 m and an opening whose radius is 2.55 x 10-3 m. A bullet (mass = 2.6 x 10-3 kg) has a speed of 433 m/s after passing through this barrel. Ignore friction and determine the average pressure of the expanding ..
To stop a car, first you require a certain reaction time to begin braking; then the car slows under the constant braking deceleration. What is your reaction time
A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of -7.50 µC. Find the magnitude and direction of the electric field at O, the center of the semicircle. EO = N/C.
An ideal gas initially at pressure 8.0 atm and temperature 300K expands adiabatically until its volume doubles. Find the final pressure and temperature if the gas is (a) monatomic, and (b) diatomic
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