Anyone that knows Physics please!!?

Posted on 2016-03-31 18:52:00 in Physics by CAROLINA

1.) Jupiter's distance from the Sun is 7.78×1011 meters and it takes 3.74×108 seconds to complete one revolution of the Sun in its roughly circular orbit. What is Jupiter's speed? 

2.) Consider the radius of the Earth to be 6.38×106 m. What is the magnitude of the centripetal acceleration experienced by a person (a) at the equator and (b) at the North Pole due to the Earth's rotation? 

3.)When tires are installed or reinstalled on a car, they are usually first balanced on a device that spins them to see if they wobble. A tire with a radius of 0.380 m is rotated on a tire balancing device at exactly 460 revolutions per minute. A small stone is embedded in the tread of the tire. What is the magnitude of the centripetal acceleration experienced by the stone? 

4.) The solar system moves around the galactic center in a roughly circular path at a radius of about 2.6×1020 m. The system's orbital speed around the center is 2.2×105 m/s. (a) What is the period of this circular motion in years? (b) What is the sun's centripetal acceleration? (c) What is the magnitude of the centripetal force keeping the sun in this path given that the sun's mass is 1.99×1030 kg? 

5.)Two beads are tied to a string at different positions, and you swing the string around your head at a constant rate so that the beads move in uniform circular motion. Bead A is closer to your hand than bead B. Compare (a) the periods of A and B; (b) the speeds of A and B; (c) the centripetal accelerations of A and B

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