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A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what should be the orientation of the loop's axis of rotation if the induced emf is to be a maximum?
A 3.70 meter long, 450 kilogram steel beam extends horizontally from the point, Find the magnitude of the torque about the point where the beam is bolted into place
the motor in a refrigerator has a power output of 200w. if the freezing compartment is at 270k and the outside air is
In an experiment designed to measure the speed of light, a laser isaimed at a mirror that is 59.0 km due north. A detector is placed122 m due east of the laser. The mirror is to be aligned so thatlight from the laser refelects into the detector.
A 4.6m -wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon when the sun is 20?above the horizon, How deep is the pool
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the apparent weight of a 2000 kg satellite in a geosynchronous orbit
one mol of aluminum at a uniform temp of 0c is placed in thermal contact with a 2nd mol of aluminum which initially is
A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye.(a) What is the refractive power of a magnifying glass that has an angular magnification of 5.2 when the image of the stamp is locat..
an electron starts from rest 2.84 cm from the center of a uniformly charged sphere of radius 2.19 cm. if the sphere
two loudspeakers are vibrating in phase. they are set up as in the figure and point c is located as shown there. the
A spring is hanging from the ceiling. Attaching a 360 g physics book to the spring causes it tostretch 10 cm in order to come toequilibrium. What is the book's maximum speed
A bullet is fired through a board that is 15.0 cm thick. The bullet moves along a direction perpendicular to the board. find the bullet's acceleration as it passes through the board
An archer lines up an arrow on the horizontal exactly dead center on a target. She releases the arrow, and it strikes the target a distance h=7.6cm below the center. how long was the arrow in the air before striking the target
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