Briefly explain how you calculated the results. 50 knot is approximately the same speed as: a. 25 m/s b. 50 mile/hour c. 100 km/hour d. 100 mile/hour e. 50 km/hour

r2: explain the reasons for the q3.

during the march equinox, the length of daylight in albany, ny is:

a. 14 hours b. 13 hours c. 12 hours d. 11 hours e. 10 hours

r4: explain why a choice is correct or wrong. explanation for one choice receive 1 point. the base point for this question is 2 points, i. e., you only need to submit explanations for any two choices. you can receive up to 4 points if you submit correct explanation for all four choices.

q4: which of the following is correct?

a. the coordinates of (42.688319°, -73.821711°) and (42.688319°n, -73.821711°w) are for the same location.

b. if you start at the equator and travel along 20° e longitude to the 60° n then travel along 60° latitude to 80° e longitude. the total distance you’ve travelled are about 104 km.

c. your plane leaves new york city at 6: 00 a. m. on saturday, bound for honolulu, hawaii. the flight takes 14 hours. when you arrive in honolulu, it will be 4 p. m. saturday at honolulu time.

d. suppose two cities having the same latitude but different longitude: city 1, 90° w, city 2, 100° w. on 1/31/2018, if the sunrise in city 1 is 7: 00 am, then the sunrise time in city 2 is 6 am.