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A) A circular coil of wire 6.61 cm in diameter has a resistance of 3.3 ?. It is located in a magnetic ?eld of 0.15 T directed at right angles to the plane of the coil. The coil is removed from the ?eld in 0.576 s. What is the induced emf in the coil? assume the magnetic fluxis reduced linearly?
B) How much electric energy is lost in the process?
A river has a steady speed of 0.490 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point, If the student can swim at a speed of 1.10 m/s in still water, how long does the trip take
What is the minimum time necessary for crossing.
Regarding the Earth and a cloud layer 750m above the Earth as the "plates" of a capacitor, calculate the capacitance. Suppose cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
football player kicks a ball with a speed of 22.1 m/s at an angle of 46° above the horizontal from a distance of 38 m from the goal line. What is the vertical velocity of the ball at the time it reaches the goalpost
A 0.3kg mas is attached to a spring with a spring constant of 120n/m and resys on a frictionless horizontal surface. It is compressed 17cm and released. Find forces and inital acceleration
Find the energy delivered by a photon of the yellow- green light to which our eyes are most sensitive
A solid sphere with mass m = 1.5 kg a radius r = 0.20 m rolls without slipping on a flat surface with an angular velocity of ? = 7.2 rad/s. What is the total kinetic energy of the sphere
An object is placed 60 cm to the left of a converging lens having a focal length of 35cm. Calculate the magnification of the final image
In one such test, 150 turns of wire were wrapped around a 7.0-m-diameter cylindrical shark tank. find the magnetic field strength in the center of the tank
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
A force P pulls on a crate of mass m that is in contact with a horizontal rough surface. Which statement best describes the motion of the crate
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearing and is used as a turntable. What is the final angular momentum of the system
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