What is a quasar?
A) a starlike object that actually represents a bright patch of gas in the Milky Way
B) a very large galaxy thought to be formed by the merger of several smaller galaxies, resulting in a quick burst of star formation
C) the name given to the largest objects in the Kuiper Belt
D) the extremely bright center of a distant galaxy
E) another name for very bright stars of spectral type O
D) the extremely bright center of a distant galaxy
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What is the relationship between color and wavelength for light?
a. Wavelength increases from blue light to red light. b. Wavelength decreases from blue light to red light. c. All colors of light have the same wavelength. d. Wavelength depends on intensity not color.
A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r
If I1 is the moment of inertia of this object with respect to an axis passing through the center of the rod and perpendicular to it and I2 is the moment of inertia with respect to an axis passing through one of the masses, it follows that A) I1 = I2. B) I1 > I2. C) I2 > I1.
What is meant by the microwave observations of the cosmic background radiation revealing the "genetic code" of the universe?
What will be an ideal response?
The process of converting a sequence of nucleotides in a section of DNA to a sequence of nucleotides in RNA, as a precursor to protein synthesis is called
A) encryption B) translation C) deciphering D) transcription