The term "albedo" refers to:
What will be an ideal response?
the amount of electromagnetic radiation reflected by a body
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If the column of mercury in a barometer stands at 69.4 cm, what is the atmospheric pressure? (The density of mercury is 13.6 × 10^3 kg/m3 and g = 9.80 m/s2.)
a. 0.968 × 10^5 N/m2 c. 0.925 × 10^5 N/m2 b. 1.03 × 10^5 N/m2 d. 1.07 × 10^5 N/m2
When a person with a near point at 28 cm uses a certain magnifying glass, it produces an angular magnification of 7.0 with the image very distant. What is the focal length of the lens of this magnifying glass?
A) 2.0 cm B) 3.0 cm C) 4.0 cm D) 5.0 cm E) 6.0 cm
Significant Figures: What is the quotient of 2.43 ÷ 4.561 expressed to the correct number of significant figures?
A. 5.3278 × 10-1 B. 5.328 × 10-1 C. 5.33 × 10-1 D. 5.3 × 10-1
Which of the following places is the result of volcanoes erupting over a hot spot in the mantle?
A) Hawaii B) the Himalayas C) the Appalachians D) California