Read these lines from the end of Walt Whitman's poem 'When I Heard the Learn'd Astronomer": In the mystical moist night-air, and from time to time, Look'd up in perfect silence at the stars. Which of these poetic devices is used here?

Alife insurance salesman sells on the average 3 life insurance policies per week. use poisson's law to calculate the probability that in a given week he will sell 2 or more policies but less than 5 policies? i just require an answer.

Mars has a surface gravity that is only 0.38 (a little over one-third) that of earth's. thus, the weight of an object will also be 0.38 times that of earth. what is the g. p.e. of a climber who weighs 675 newtons on earth at the top of 26,000-meter olympus mons?

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?