A plane, flying horizontally, releases a bomb, which explodes before hitting the ground. Neglecting air resistance, the center of mass of the bomb fragments, just after the explosion
A)
is zero.
B)
moves horizontally.
C)
moves vertically.
D)
moves along a parabolic path.
D
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How does the diameter of the disk of Milky Way Galaxy compare to its thickness?
A) The diameter and thickness are roughly equal. B) The diameter is about 100 times as great as the thickness. C) The diameter is about 10 times as great as the thickness. D) The diameter is about 100,000 times as great as the thickness.
A proton is captured by an oxygen-16 atom which in turn emits a deuteron. What is the element and mass number of the product isotope?
a. nitrogen-15 b. oxygen-17 c. oxygen-15 d. fluorine-15
The simplest member of the alkane series is named ______________
Fill in the blank(s) with correct word
Three identical point charges Q are placed at the vertices of an equilateral triangle (length of each side = 2.0 m). If Q = 60 mC, what is the magnitude of the electrostatic force on any one of the charges?
a. 25 N b. 19 N c. 14 N d. 22 N e. 16 N