The Widmanstätten patterns found in some meteorites show that the material
a. cooled very slowly.
b. cooled very rapidly.
c. was never heated to the point of being molten.
d. was molten just before it entered Earth's atmosphere.
e. is composed primarily of organic compounds.
a
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Bronco's speed increases after he dives from a hovering helicopter. Relative to an observer in the helicopter Bronco's momentum
A) also increases. B) remains unchanged. C) decreases.
A laser is thrown upward with a speed of 12 m/s on the surface of planet X where the acceleration due to gravity is 1.5 m/s2 and there is no atmosphere. How long does it take for the laser to reach the maximum height?
A) 8.0 s B) 11 s C) 14 s D) 16 s
The solar system contains the Sun, eight major bodies called planets, and at least thousands of smaller bodies
Indicate whether the statement is true or false
A piece of glass that appears red
A) absorbs or reflects all colors except red. B) transmits red. C) both of these D) neither of these