You live in a Universe where matter dominates significantly over antimatter

a. True
b. False
Indicate whether the statement is true or false


True

Physics & Space Science

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Thin Films: The wavelength of light in a thin film is 360 nm and the wavelength of light in vacuum is 469 nm. What is the index of refraction for the film?

A. 1.10 B. 1.30 C. 1.50 D. 1.70 E. 1.90

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The single most important determinant of the temperature, density, radius, luminosity, and pace of evolution of a protostar is its:

A) chemical composition. B) magnetic field. C) spin. D) mass. E) molecular composition.

Physics & Space Science

When Rutherford directed a stream of alpha particles at a gold foil, some particles

A) bounced back. B) continued through the foil. C) deflected at a variety of angles. D) all of the above E) none of the above

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The spectra of interstellar gas clouds show that they have the same basic composition as

A) Earth's atmosphere. B) stars. C) asteroids. D) interstellar dust. E) the Martian polar caps.

Physics & Space Science