Displacement is which of the following types of quantities?
a. vector
c. magnitude
b. scalar
d. dimensional
A
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In a two-slit interference pattern projected on a screen, the fringes are equally spaced on the screen
1.everywhere. 2.only for large angles. 3.only for small angles.
Our solar system contains only 65 moons (as of Summer 2007)
Indicate whether the statement is true or false
The rounding of the sharp edges and corners of rocks is called
What will be an ideal response?
Most spiral galaxies have rotation curves that
A) decrease rapidly with increasing radius in the disk, indicating no dark matter is present. B) increase drastically with increasing radius. C) decrease rapidly with increasing radius in the disk, indicating the presence of dark matter. D) stay constant out to large radii in the disk, indicating that no dark matter is present. E) stay constant out to large radii in the disk, indicating the presence of dark matter.