Why does the Sun emit neutrinos?
A) Convection releases neutrinos, which random walk through the radiation zone.
B) The Sun does not emit neutrinos.
C) Neutrinos are a by-product of fusion in the Sun's core.
D) Solar flares create neutrinos with magnetic fields.
C) Neutrinos are a by-product of fusion in the Sun's core.
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Rotational Dynamics: A 375-g stone hangs from a thin light string that is wrapped around the circumference of a frictionless pulley with a moment of inertia of 0.0125 kg ? m2 and a radius of 26 cm. When the stone is released, the stone accelerates downward and the pulley rotates about its axis as the string unwinds.(a) What is the magnitude of the acceleration of the stone?(b) What is the tension in the string?
What will be an ideal response?
According to the law of reflection, the incident light ray, the reflected light ray, and the normal between them
A) lie in the same plane. B) may or may not lie in the same plane. C) lie in planes that are perpendicular to one another.
How many moles of air must escape from a 15.0-m × 9.0-m × 6.0-m room when the temperature is raised from 10.0°C to 20.0°C? Assume the pressure remains unchanged at one atmosphere while the room is heated. (R = 8.31 J/mol/K)
a. 4.9E+3 moles b. 1.2E+3 moles c. 2.2E+2 moles d. 7.9E+2 moles e. 5.0E+3 moles
How many atoms are in one molecule of Na2SO4?
A) 7 B) 2 C) 4 D) 3 E) 24