If you use a marble of radius 11 mm for mercury, how far from the sun must you place your outermost planet? express your answer with the appropriate units.

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units