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The Earth's magnetic field is essentially that of a magnetic dipole. If the field near the North Pole is about 1.0 x 10-4 T, find what will it be 12,600 kilometers above the surface at the North Pole?
A nuclear power plant is 24% efficient, meaning that 24% of the power it generates goes into producing electricity. The remaining 76% is wasted as heat. The plant generates 680 MW of electric power. If each fission releases 200 MeV of energy, how man..
A 1.24 kilogram block is held against a spring of force constant 0.8 x 10^4 N/m, compressing it a distance of 0.16 meter. Evaluate how fast is the block moving after it is released
You wish to launch a satellite that will remain above the same spot on earth's surface. calculate the radius of the circular orbit this satellite must have
A proton is accelerated from rest by a potential difference of 335 V. The proton enters a uniform magnetic field and follows a circular path of radius 25 cm. Determine the magnitude of the magnetic field. 1
question a metal sphere is insulated electrically and is given a charge. if 25 electrons areadded to the sphere in
An electron in a vacuum is first accelerated by a voltage of 21100 V and then enters a region in which there is a uniform magnetic field of 0.644 T at right angles to the direction of the electron’s motion.
q1. light of wavelength 443 nm in air enters a fishbowl filled with water and then exits through the crown-glass wall
a concave mirror has a radius of curvature of 13.4 cm. if a pointlike object is placed 8.31 cm away from the mirror on
a father racing his son has half the kinetic energy of the son who has half the mass of the father. the father speeds
A 0.54-kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
a 3 micro-colomb charge is located 1m from a 5 micro-colomb charge. what new distance between the two charges would
The four tires of an automobile are inflated to a gaugepressure of 2.3 105 Pa.Each tire has an area of 0.024m2 in contact with the ground. Determine the weight of the automobile
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