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Problwm:
A 5-turn circular loop of wire of radius 23 cm carries a current of 15 A. Its magnetic moment is oriented at an angle 50o to a uniform magnetic field of 3.7 T. What energy is required to rotate the loop from its lowest energy position to this orientation?
A 2400 W engine pulls a 200 kg block at constant speed up a 12.0 m long, 25.0° incline. Determine long does it takes to cover this distance.
A roller-coaster car moves 227 ft horizontally and then rises 115 ft at an angle of 31.0° above the horizontal. What is its displacement from its starting point
A neutron at rest decays into a proton and an electron. How much Kinetic energy (in MeV) are shared by the electron and proton? Can a proton decay into a neutron and positron?
Write the expressions for the electric and magnetic fields of a uniform plane wave propagating in an arbitrary direction and list all the conditions to be satisfied by the electric field, magnetic field, and propagation vectors.
A diver of mass 70kg jumps off a board 10m above the water. what average upward force did the water exert on him
a small dog sits 3.0 m in front of a plane mirror. where is the dog's image in relation to the mirror
The best leaper in the animal kingdom is the puma, which can jump to a height of 11.9 ft when leaving the ground at an angle of 53°. With what speed, in SI units, should the animal leave the ground to reach that height?
A 3.86-kHz tone is being produced by a speaker with a diameterof 0.239 m. The air temperature changes from 0 to 28.4oC. Assuming air to be an ideal gas, find the change in the diffraction angle
A 1 cm3 air bubble at a depth of 280 m and at a temperature of 4oC rises to the surface of the lake where the temperature is 13.3oC. determine what is its new volume
A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. How many carbon atoms are there compared to gold atoms
A roller coaster starts from rest at the top of an 18-m hill as shown. The car travels to the bottom of the hill and continues up the next hill that is 10.0 m high. How fast is the car moving at the top of the 10.0-m hill if friction is ignored?
A transverse wave of frequency 14 Hz propagates down a string. Two points 15 cm apart are out of phase by pi/6. What is the wave velocity
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