A star is observed with a surface temperature of 3000 K and a luminosity of 10?3 times that of the Sun. Based on the H-R diagram shown above, what is the approximate radius of this star?
A) 0.1 solar radius
B) 0.5 solar radius
C) 1 solar radius
D) The radius cannot be determined.
A) 0.1 solar radius
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The change in constellations with the seasons are caused by ________.
A. the rotation of Earth B. the Sun's orbit around the center of the galaxy C. zodiacal shift D. the precession of Earth's axis E. the revolution of Earth
Describe how Einstein used the photoelectric effect to support the particle theory of light and photons
What will be an ideal response?
Newton found that when light passed through a prism, it was dispersed into the component colors. Which bent the least, and why?
What will be an ideal response?
The number of ______________ appearing on the Sun varies over an 11-year cycle
Fill in the blank(s) with correct word