Which question asks for an opinion? A. Can people who visit Mars use the resources there to fuel a return
trip to Earth?
B. How much more radiation reaches Mars's surface than reaches
Earth's surface?
C. Is it a good idea to try to establish human colonies on Mars?
D. Is it possible to establish a human colony on Mars?

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)

Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s

Using the black numbers on the stopwatch to answer the questions. what is the most accurate reading of seconds as indicated by the long second hand? a. 5.3 b. 5.6 c. 7.2 d. 53 secs its for edg i found out it was 5.3 and tenth of seconds freebie