From the center outward, which of the following lists the "layers" of the Sun in the correct order?
A) core, radiation zone, convection zone, photosphere, chromosphere, corona
B) core, radiation zone, convection zone, corona, chromosphere, photosphere
C) core, convection zone, radiation zone, corona, chromosphere, photosphere
D) core, corona, radiation zone, convection zone, photosphere, chromosphere
A) core, radiation zone, convection zone, photosphere, chromosphere, corona
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Why is the night sky dark?
A) Dark matter obscures light from distant objects. B) The dust clouds in interstellar space block the light. C) The universe has a physical edge, beyond which there is nothing. D) The universe is finite in age.
Which of the following particles (or groups of particles) are made up of quarks?
A) protons, neutrons, and electrons B) electrons and neutrinos C) photons D) protons and neutrons E) All particles except for photons are made up of quarks.
What is the index of refraction inside a certain transparent material if the critical angle is found to be 48.° (air is outside)?
A) 1.49 B) 1.48 C) 1.35 D) 0.743 E) 1.22
How many moles of water (H2O) molecules are in a 4.00 m3 container at a pressure 8.00 × 105 N/m2 and temperature 600°C? The ideal gas constant is R = 8.314 J/mol•K = 0.0821 L ? atm/mol ? K
A) 7.72 × 1026 mol B) 641 mol C) 441 mol D) 3.86 × 1026 mol E) 2.65 × 1026 mol