The redshifts of the galaxies imply that the Universe is expanding and that we are at the center
Indicate whether the statement is true or false
False
Physics & Space Science
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Index of Refraction: A light beam has speed c in vacuum and speed v in a certain plastic. The index of refraction n of this plastic is
A. n = cv. B. n = (v/c)2. C. n = v/c. D. n = c/v. E. n = (c/v)2.
Physics & Space Science
If the Sun and stars are supported by gas pressure, what supports a white dwarf?
What will be an ideal response?
Physics & Space Science
How much heat is necessary to change 30 g of water at 10°C into water at 80°C?
a. 0.21 kcal b. 2.1 kcal c. 4.5 kcal d. 0.51 kcal
Physics & Space Science
A 25.0-V potential source (a battery) is connected across the plates of a 6.66-µF air-filled parallel-plate capacitor having plates that are 1.22 mm apart
What energy density does it produce between the plates? (?0 = 8.85 × 10-12 C2/N ? m2)
Physics & Space Science