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SCI 101 Homework #2 Solutions 1 Question 1 In what year was ...

SCI 101 Homework #2 Solutions 1 Question 1 In what year was ...

SCI 101 Homework #2 Solutions 1 Question 1 In what year was

SCI 101 Homework #2 Solutions 1Question 1 In what year was Galileo born? In what year did he die? In what year wasIsaac Newton born?Galileo was born in 1564, and died in 1642. Newton was born in 1642.Question 2 Did there exist pendulum clocks when Galileo was young? If not, how didpeople keep time during the day? When was the pendulum clock invented?No, there were no pendulum clocks in Galileo’s time. Galileo is thought to be theperson who first noticed (and wrote) down, the fact that the period of a pendulumdepends very little on how far it is swinging back and forth (it’s “amplitude”). Butthis did not quickly lead to the invention of pendulum clocks. The first pendulumclock was built by Christiaan Huygens, a Dutchman and contemporary of Newton, in1657. This is after Galileo died.Question 3 Who was Galileo’s father, and what was his profession? Did he make a goodliving at this?Galileo’s father was Vincenzio Galilei, a musician and teacher of music theory. Vencenzioaugmented his small income by activity in his wife’s family’s business; they werecloth merchants.Question 4 Vincenzio did not wish his son to become a monk, but had no objection to hisdaughters becoming nuns. What was the reason for this: a personal belief, economicconstraints, or what? Explain.It was largely because of economic realities. If Galileo became a monk, Vincenziowould have had to support him, providing money to the church. He could not affordthat, but rather needed a son who could make money and contribute to the family’sneeds. The daughters, on the other hand, would either need a dowry to get married,or would need support if they became nuns. Either way, they would cost money, sothere was not a clear economic choice here.Question 5 Assuming that the universe is 15 billion years old, what is the maximum possiblesize of the universe? (Assume that the speed of light cannot be exceeded; somewould argue that this is not true for the early universe.) Give the answer in meters.We assume that the universe expands at close to the velocity of light; this would giveus the largest size. We also know thatdistance = (velocity) × (time)

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