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A 1200 turn coil in a dc motor has an area per turn of 2.2 * 10-2m-2. The design for the motor specifies that the magnitude of the maximum torque is 2.9 N-m when the coil is placed in a .20 T magnetic field. What is the current in the coil?
A stationary block of mass M - m is struck by a bullet of mass m traveling at speed v0. During the impact, obtain the speed of the block
A 5 kg piece of metal displaces 0.75 L of water when submerged. What is the buoyant force on the piece of metal
An object with a charge of 0.880 µC is placed at the center of a regular octahedron with 8 equivalent surfaces. What is the electric flux through one surface of the octahedron?
An object with mass 4.0kg is executing simple harmonic motion, attached to a spring with spring constant 300N/m, Calculate the amplitude of the motion
A particle of mass 0.450 kg is attached to the 100-cm mark of a meter stick of mass 0.175 kg. Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark
It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down, Find the net amount of charge contained in a cube 150 m on edge
A 55g horizontal metal bar, 15cm long, is free to slide up and down between two tall, vertical metal rods that are 15cm apart. What is the terminal speed at which the bar falls
A compact disk spins with angular velocity 40.8rad/s. The player is turned off, and 2.10s later the CD has stopped. Find its average angular acceleration
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), Determine the radius of the path
Emily has a field with uniformly cut grass of height 2 cm which grows at a constant rate. How long would it sustain each animal alone
rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 44.1m/s^2. Find the maximum height ymax reached by the rocket
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