Which type of asteroid is classified only slightly red, mostly consisting of an iron-nickel alloy?
a. C-type
b. F-type
c. M-type
d. S-type
e. V-type
c
Physics & Space Science
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What is the area of a circle of radius 1.119 m?
A) 3.934 m2 B) 3.93 m2 C) 3.9338 m2 D) 3.93378 m2 E) 3.937 m2
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A flashlight, which uses two 1.5 V batteries in series, is turned on for 2.0 minutes. If the current in the flashlight is 100 mA, what is the energy dissipated?
A. 12 J B. 9.0 J C. 72 J D. 36 J E. 18 J
Physics & Space Science
An object 4 cm high is placed 15 cm in front of a convex mirror with a focal length of ?10 cm. What is the image position (in cm)?
A. ?8 B. ?4 C. ?2 D. ?6 E. 30
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A radioactive sample has a half-life of 10 min. What fraction of the sample is left after 40 min?
A) 1/2 B) 1/4 C) 1/8 D) 1/16
Physics & Space Science