Created by StemPy LabTwo cars drive side by side on a straight highway, in different lanes, each at towards the north. A third car, far behind them on the same highway, also drives at towards the north. Which statement about their velocities is correct?
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← A conducting wire bent into the shape of the parabola y² = 2x carries a current i = 2 A, from point B(2,-2) to point A(2,2) (coordinates in metres), as shown in the figure. This wire lies in a uniform magnetic field B = -4k̂ tesla (field is uniform everywhere, directed into the page). What is the magnetic force on the wire?Two dogs pull a small cart with ropes. One pulls with 6 N and the other with 8 N, and the angle between the ropes is 60°. The size of the resultant pull on the cart is about →
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