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The magnetic field due to the current in a long, straight wire is 8.0 uT at a distance of 4.0 cm from the center of the wire. What is the current in the wire? (u0=4pix10^-7 Txm/A)
A 1.00-kg block compresses a spring for which k1 = 100. N/m by 20.0 cm and is then released to move across a horizontal, frictionless table, determine the maximum compression of the second spring
A 15 kg block is on a ramp which is inclined at 20° above the horizontal. It is connected by a string to a 28 kg mass which hangs over the top edge of the ramp. Assuming that frictional forces may be neglected, what is the magnitude of the accelerati..
Flies flap their wings at frequencies much too high for pure muscle action. how would this change the frequency of the wingbeats
A space station is to provide artificial gravity to support long-term stay of astronauts and cosmonauts. It is designed as a large wheel, with all the compartments in the rim, how long should the motor fire
A thin film of cryolite (nc = 1.37) is applied to a camera lens (ng = 1.65). Find what minimum thickness gives high reflectivity at 490 nm
A rotating cylinder about 16 km in length and 7.0 km in diameter is designed to be used as a space colony. With what angular speed must it rotate
A boat is cruising in a straight line at a constant speed of 2.5 m/s when it is shifted to neutral. what was the boats acceleration while coasting
A box contains 10000 gas molecules, 7500 of argon and 2500 of nitrogen in thermal equilibrium. Find what is the temperature of this gas
you pull your t-shirt out of the washing machine and note that 1446 particles have become attached each of which could
The sound intensity of 1.4x10-12 J/m2s is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules if the speed of sound in the air is 331 m/s and the density of air is 1.2 kg/m3?
Early underwater exploration was conducted with a diving bell. Acylindrical diving bell 3.0 m in diameter and 4.0 m tall with thebottom open is submerged to a depth of 220 m in the ocean. How high does the sea water rise in the bellat this depth
A plastic rod is rubbed with a cloth, and in the process it acquires a charge of ?2.1×10E?8C. How much does the mass of the rod increase by
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