Author Question: If a jet plane were to double its MACH-speed, its half-angle will A) decrease. B) increase. C) ... (Read 78 times)

DelorasTo · **on:** Jul 27, 2018

If a jet plane were to double its MACH-speed, its half-angle will

A) decrease.
B) increase.
C) stay the same.

Question 2

A future use of space stations may be to provide hospitals for severely burned persons. It is very painful for a badly burned person on Earth to lie in bed. In a space station, the effect of gravity can be reduced or eliminated.

With what period of rotation would a doughnut-shaped hospital of 200. m radius have to rotate, if persons on the outer perimeter are to experience 1/10 the gravity effect of Earth? A) 91. min
B) 1.5 min
C) 8.7 min
D) 4.6 min
E) 0.011 min