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A planet orbits a star once every 2.99 107 s in a nearly circular orbit of radius 1.42 1011 m.
(a) With respect to the star, determine the angular speed of the planet.
rad/s
(b) With respect to the star, determine the tangential speed of the planet.
m/s
(c) With respect to the star, determine the magnitude and direction of the planet's centripetal acceleration.
magnitude m/s2
direction
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