Asolar system where all orbits are circular and increase in size from the nearest to the farthest away from the sun, best describes which of the following models? a. sun-centered b. modern-view c. earth-centered d. increasing orbit

Six pendulums of mass mand length las shown are released from rest at the same angle theta from vertical. rank the pendulums according to the numberof complete cycles of motion each pendulum goes through perminute. a. l= 1m m=2kg b. l= 4m m=1 kg c. l= 2 m m= 2 kg d. l= 1 m m= 4 kg e. l= 2 m m = 4 kg f. l= 4m m = 4kg