According to the Hertzsprung-Russell diagram, a star with a very high luminosity and a temperature of around 9000 K is most likely which type of
star?
Hertzsprung-Russell Diagram
Supergiants
Main sequence stars
Giants
Luminosity
Sun
White dwarfs
Temperature (Kelvin)
30,000
20,000
10,000
7000
6000
4000
3000
A. Supergiant
B. White dwarf
C. Giant
D. Main sequence star

Which statement correctly describes the relationship between frequency and wavelength?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.