On an H-R diagram, stellar masses ________
A) decrease from upper left to lower right
B) are impossible to determine
C) are greatest in the lower left and least in the upper right
D) can be determined for main sequence stars but not for other types of stars
D
You might also like to view...
A 2.0 kg mass is moving along the x-axis. The potential energy curve as a function of position is shown in the figure. The kinetic energy of the object at the origin is 12 J. The system is conservative, and there is no friction
(a) What will be the kinetic energy at 2.0 m along the +x-axis? (b) What will be the speed of the object at 6.0 m along the +x-axis? What will be an ideal response?
A car can move at constant speed on a level curve on a highway as long as the force of ________ between the pavement and tires is sufficient to provide the necessary centripetal force.
Fill in the blank(s) with the appropriate word(s).
A 75.0-kg swimmer dives horizontally off a 465-kg raft initially at rest. If the diver's speed immediately after leaving the raft is 5.00 m/s, what is the corresponding raft speed?
a. 31.0 m/s b. 375 m/s c. 0.806 m/s d. 1.24 m/s e. 5.00 m/s
A steel ball bearing of mass m1 and speed of magnitude v1 has a head-on elastic collision with a steel ball bearing of mass m2 at rest. Rank the speed v1 of m1 relative to v2, the magnitude of the speed of m2, after the collision when i) m1>m2; ii) m1 = m2; and iii) m1
A. v1v2; v1>v2