A planet with an albedo of 10 percent absorbs 10 percent of the sunlight that strikes it and reflects the other 90 percent

Indicate whether the statement is true or false


FALSE

Physics & Space Science

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As Earth rotates, circumpolar stars appear to move counterclockwise around the north celestial pole

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

Physics & Space Science

The absence of a magnetic field on Venus probably stems from its:

A) nearness to the Sun. B) extremely thick atmosphere. C) slow rotation. D) high surface temperatures. E) lower density than Earth, suggesting an absence of an iron core.

Physics & Space Science

How is a luminosity class assigned to a star?

a. By combining the apparent magnitude with the star's parallax. b. By measuring the period of variability in the star's apparent magnitude. c. By studying the absorption line width in the spectrum of the star. d. By observing the angular size of the star's image in a photograph or digital image.

Physics & Space Science

Nuclear Fission and Fusion: When 235U undergoes fission, the average energy per fission event is 200 MeV. How much energy is released in the total fission of 2.0 g of 235U? (1 eV = 1.60 × 10-19 J, mneutron ? mproton = 1.67 × 10-27 kg)

A. 1.6 × 1011 J B. 3.9 × 1013 J C. 1.6 × 105 J D. 3.9 × 1010 J

Physics & Space Science