The force between two objects, each of charge -q is measured as +f when the objects are separated a distance 2d
apart. if the charge on only one object is tripled, determine the new force between them:
+3f
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Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2

Does the asteroid belt revolve around the sun?