A particle is located at the position vector r = (7.00î + 10.00j) m and a force exerted on it is given by F (5.00î + 4.00j) N. (a) What is the torque acting on the particle about the origin? -22k N. m (b) Can there be another point about which the torque caused by this force on this particle will be in the opposite direction and half as large in magnitude? O Yes O No (c) Can there be more than one such point? O Yes O No (d) Can such a point lie on the y-axis? O Yes O No (e) Can more than one such point lie on the y-axis? O Yes O No (f) Determine the position vector of one such point. (Give a point on the y-axis.) -2.2j

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.