You are in a place that is extremely hot and dense, making you feel quite sweaty and claustrophobic. You can't see far because your surroundings are opaque to light. Around you, nuclear fusion is converting carbon into oxygen and other elements
Where are you? A) You are in the center of a star very much like our Sun.
B) You are in the early universe during the era of nucleosynthesis.
C) You are inside a nuclear power plant on Earth.
D) You are in the center of a massive star near the end of its life.
E) You are in the center of a star much smaller than the Sun.
D
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According to Callicles’ presentation in Plato’s Gorgias, nature herself (in contradistinction to conventional morality) dictates that
a. the more powerful individuals should have more than the less poweful b. the community should seek to maximize the happiness of the greatest number of people c. the less powerful individuals should have more than the more powerful d. treating everybody as equals is just
Synchrotron radiation produces a(n) ________ spectrum
A) continuous nonthermal B) emission line C) absorption line D) continuous, with some absorption lines E) continuous, with some emission lines
An amateur astronomer grinds a double convex lens whose surfaces have radii of curvature of magnitudes 40 cm and 60 cm. The glass has an index of refraction of 1.54. What is the focal length of this lens when used in the night air?
A) 220 cm B) 43 cm C) 130 cm D) 89 cm E) 44 cm
The magnetic field near a strong permanent bar magnet might be 500
A) microGauss. B) Tesla. C) Gauss. D) milliGauss. E) MT.