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The problem states that initially the wire coil is oriented perpendicular to a magnetic field of 0.63T pointing up. Over time the field is changed to one of 0.25T pointing down. We are solving for the average induced emf in the coil. The solution provided uses Faraday's law ε= -A(B2-B1)/Δt. My question lies in finding the changing in magnetic flux (B2-B1). The solution shows (-±0.25T - 0.63T) giving the change in magnetic flux as a -0.88 T... why is the final magnetic field (B2) negative? Shouldn't the problem be solved as (0.25T - 0.63T) giving the change in magnetic flux as -0.38 T?
A 7.50-nC charge is located 1.80m from a 4.20-nC charge, find the magnitude of the electrostatic force that one particle exerts on the other
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
Neglect air resistance for the following. A soccer ball is kicked from the ground into the air. When the ball is at a height of 8.63 m, its velocity is (vx,vy) = (6.69,3.27) m/s.
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a popular entertainment at some carnivals is the blanket toss.a if a person is thrown to a maximum height of 28.0ft
an electron moving through an electric field experiences an acceleration of 7100 times 103 ms2. find the magnitude of
The coil is flipped so its plane is vertical to the magnetic field in 0.050 s. What is the magnitude of the average induced emf.
A marble is thrown horizontally with a speed of 19 m/s from the top of a building. From what height above the ground was the marble thrown
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