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A magnetic field B crosses a plane boundary between two LIH magnetic materials. In the first material, of relative permeability mu1=2.0, the magnetic field B is uniform and makes an angle of 30 degrees with the normal to the boundary. calculate the angle theta which the magnetic field makes to the normal to the boundary in the second material, whose relative permeability is mu2=3.0.
A planet of mass m = 8.15 Ã? 1024 kg is orbiting in a circular path a star of mass M = 6.05 Ã? 1029 kg. What is the orbital period (in earth days) of the planet Tplanet
In 13.6 s, 220 bullets strike and embed themselves in a wall. What is the average change in momentum per second for the bullets
Sound with a frequency of 466 Hz travels through steel. What is the speed of the sound in steel?
The horizontal surface is frictionless and the system is free from rest. Using energy concepts, determine the speed of m3 after it moves down a distance of 6.0 m.
Explain how much force must you exert to keep the pole motionless and horizontal?
Find the magnitude and direction of the acceleration. A 2.60 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.19..
In a proton linear accelerator, a 8.4mA proton current hits a target. How many protons hit the target each second
a 25.0 mH inductor is in an AC-circuit with a 150 V ac-source which operates at 60.0Hz. find the inductive reactance
When certain light rays pass from a vacuum into a block of an unknown material, What is the speed of light inside the block
Explain how many penguins of mass 27 kg each can stand on the ice block before they get their feet wet?
A solenoid 60 cm long has 5000 turns of wire with a 1.00 cm radius. Find the flux inside the coil when the wire carries a current of 3.0 A
A diver 40 m deep in 10 degree Celcius fresh water exhales a 0.50-cm-diameter bubble. What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 degrees Celcius? Assume that the air bubble is always in..
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