A friction force
A. is a contact force that acts parallel to the contact surfaces.
B. is a normal force between contact surfaces.
C. is a scalar quantity since it can act in any direction along a surface.
D. does not depend on the nature of the surfaces.
A. is a contact force that acts parallel to the contact surfaces.
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Suppose you lived on the Moon near the center of the face that we see from Earth. At what phase of the Moon would you see sunset? What phase of Earth would you see at this time?
What will be an ideal response?
The ________ equation was written to assess the probabilities of technological, intelligent life existing in the Galaxy
Fill in the blank(s) with correct word
Four electrons move from point A to point B in a uniform electric field as shown below. Rank the electrons in diagrams I through IV by the changes in potential energy from most positive to most negative when traveling from A to B
a.
I = II = III = IV.
b.
II = III > I > IV.
c.
III > I = IV > II.
d.
II > I = IV > III.
e.
I > II = III > IV.
Relative dating tells us the
A) time gaps that occur during deposition. B) age of rock layers. C) sequence of rock layers—which formed first, second, and last. D) actual date of formation for a rock layer.