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18. Complete the following diagrams by drawing conventional current direction, electric field lines, magnetic field lines, magnetic field polarity, or direction of force, where appropriate. Two fixed negative charges (Draw the An electron is moving through a magnetic field electric field.) into the page. (Draw the direction of force.) Current is flowing through a conductor. Current is flowing through the circuit. (Draw (Draw the conventional current direction and | the conventional current direction and the the magnetic field lines.) magnetic field polarity.) F 1 A cow is rollerblading around a banked corner of radius 15 m that is inclined at an angle of 25. The cow is moving at a constant speed and does not slide up or down the incline. Friction between the cow and incline are negligible. What is its speed? (Hint: the circular acceleration is towards the centre of the track, parallel to the ground, so break force components parallel and perpendicular to the ground, NOT the slope) cow travelling out of page