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An electric dipole attached to a massless rod of length b is placed in a uniform electric field E. Find the natural frequency of oscillation if the dipole is slightly rotated from its equilibrium position and released. If a damping torque proportional to angular veloicty of the dipole is present, determine the frequency of oscillation.
A small steel sphere of mass 0.40kg is attached by a 5.0m long cord to a swivel pin set into the surface of a frictionless table top. What is the magnitude of the centripetal accerleration of the sphere
You would like to store 9.4J of energy in the magnetic field of a solenoid. What is the energy density (energy/volume) inside the solenoid
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
A spring with a constant of 32N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. What is the velocity of the mass as it leaves contact witht he spring
A 14.1-g bullet is accelerated from rest to a speed of 793 m/s in a rifle barrel of length 66.9 cm. (a) Find the kinetic energy of the bullet as it bullet as it leaves the barrel.
A certain heat engine does 10.2 kJ of work and 9.5 kJ of heat is transfered to the environment in a cyclical process. What was the heat transfer into this engine
A silicon solar cell looks like a battery with a 0.33Vterminal voltage. What is the solar cell's efficiency-that is, what percentage of the energy incident on the cell is converted to electric energy
A hunter wishes to cross a river that is 2.0 km wide and flows with a speed of 5.0 km/h parallel to its banks. What is the minimum time necessary for crossing
The two mediums below propagate particles differently. Which of the two medium would have higher acoustic velocity and create better propagation or movement of particles? water balloons, hard baseballs.
Consider a chain with length 0.9 m and mass per unit length 0.6 kg/m. Suppose it is initially suspended above a table so that the lower, What is the force when one-half of the chain lies on the table
Two people carry a heavy electric motor by placing it on a light board 1.55 m long. One person lifts at one end with a force of 390 N, What is the weight of the motor
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