By definition, our Sun has a mass-to-light ratio of 1 solar mass per solar luminosity
Indicate whether the statement is true or false
TRUE
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The lamp most similar to the common fluorescent lamp is the
A) LED. B) CFL. C) incandescent lamp. D) none of the above
A beam of light that is parallel to the principal axis strikes a concave mirror. What happens to the reflected beam of light?
A) It also is parallel to the principal axis. B) It is perpendicular to the principal axis. C) It passes through the center of curvature of the mirror. D) It passes through the focal point of the mirror. E) It passes between the focal point and the center of curvature of the mirror.
With volume and molar quantity held constant, by what factor does the absolute temperature change for an ideal gas when the pressure is five times bigger?
a. 1/5 b. 1 c. 5 d. 25
The diurnal rotation of the stars refers to the
A) apparent rotation of the celestial sphere due to the rotation of the Earth. B) movement of the stars across the sky during daytime hours. C) rate of spin of stars in their formation stage. D) particular constellations that are visible in different times of the year.