Find out the magnitude of magnetic moment of the magnet
A short bar magnet placed with its axis at 30º with a uniform external magnetic field of 0.25 T experiences a torque of magnitude equal to 4.5 × 10-2 J. What is the magnitude of magnetic moment of the magnet?
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What is the power radiated (in watts) by the sphere? For simplicity, assume the sphere and the vessel are both ideal blackbody radiators, with emissivity e = 1.
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The baseball player A hits the baseball with v_A = 40 ft/s and theta_A = 52^\circ. When the ball is directly above of player B he begins to run under it.
What is the atmospheric pressure at that altitude? If the actual temperature outside her aircraft is18C, what is her density altitude?
Consider a tank containing 40.0 kg of water. Neglecting the heat capacity of the tank, how much heat (in joules) would be required to raise the water temperature of from 1 to 94 degrees Celsius?
The standard deviation speed of the 269 travelers who were arriving was 34 feet per minute. Assuming walking speed is normally distributed, does the evidence suggest the standard deviation walking speed is different between the two groups? Use the
If the bar is free to rotate in the plane of the field, which orientation would correspond to its (a) stable, and (b) unstable equilibrium? What is the potential energy of the magnet in each case?
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