At the upper right of the HertzprungRussell diagram we find
A) red giant stars
B) supergiant stars
C) white dwarfs
D) main sequence stars
Question 2
The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s.
(a) At what angle upstream should the driver head the boat?
(b) How long will it take to cross a distance of 1.6 km?