What role did Princeton astronomers play in the research on the Big Bang?

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Even before Bell Labs found it, they predicted the existence of the cosmic microwave background radiation.

Physics & Space Science

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Exclusion Principle: For the ground state of the hydrogen atom, which of the following numbers represents the correct value of the magnetic quantum number?

A. -1 B. 0 C. 1 D. 2 E. -2

Physics & Space Science

The Copernican system was no more accurate than the Ptolemaic system in predicting the positions of the planets because ___________just as in the Ptolemaic system

a. the Copernican system assumed the Earth was at rest at the center b. the Copernican system used elliptical planetary orbits c. the Copernican system used uniform circular motion d. the Copernican system assumed all planets orbited the Sun

Physics & Space Science

Describe the range of sizes and masses of black holes

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Physics & Space Science

Consider a particle composed of quarks

(a) The negative pion is composed of what combination of up and down quarks? (b) Is the negative pion a baryon or meson? (c) Is the negative pion a lepton or a hadron?

Physics & Space Science