What is the force that keeps a main sequence star from collapsing on itself?
A) Magnetism
B) Gravitation
C) The strong force
D) Radiation pressure
E) Electron degeneration pressure
D
You might also like to view...
Power: The net force that an animal exerts on a large fruit it has found is observed over a 10-s interval and is shown in the graph in the figure. What was the average power delivered to the fruit by the animal over this time interval?
A. 0.00 W B. 1.3 W C. 2.5 W D. 2.2 W E. 5.0 W
Conservation of Momentum: A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.)
A. The truck experiences the greater magnitude momentum change. B. The small car experiences the greater magnitude momentum change. C. The small car and the truck experience the same magnitude momentum change. D. The magnitude of the momentum change experienced by each one is inversely proportional to its mass. E. The magnitude of the momentum change experienced by each one is directly proportional to its mass.
Buoyancy: What buoyant force does a 0.60-kg solid gold crown experience when it is immersed in water? The density of gold is 19.3 × 103 kg/m3 and that of water is 1000 kg/m3.
A. 3.0 × 10-5 N B. 3.0 × 10-4 N C. 3.0 × 10-2 N D. 0.30 N
What causes the bubbling pattern of granulation that we see in the Sun's photosphere?
A) underlying convection B) sunspots C) dark areas of the pattern have larger concentrations of carbon D) dust particles E) magnetic fields