The microwave emission detected by Arno Penzias and Robert Wilson fits a blackbody spectrum with a temperature of about ____

a. 0 K
b. 273 K
c. 27 K
d. 7.2 K
e. 2.7 K


e

Physics & Space Science

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A light bulb operating at a dc voltage of 120 V has a power rating of 60 W. What is the current through this bulb?

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A planet is discovered to orbit around a star in the galaxy Andromeda, with the same orbital diameter as the Earth around our sun

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Which of the following statements is incorrect?

What will be an ideal response?

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Ultraviolet light has wavelengths that are ________ visible wavelengths.

A. the same energy as B. slower than C. shorter than D. faster than E. longer than

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