The true distance of a nearby object can be calculated from the size of the apparent shift in its position relative to the background as seen from two viewing positions. That shift is called _____
A) occultation
B) parallax
C) focal ration
D) collimation
B
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An organ pipe open only at one end will have a displacement node at the ________ end.
Fill in the blank(s) with the appropriate word(s).
Which one of the following cannot be a definition of an elastic modulus?
A.
B.
C.
D.
E.
Compared with the amount of current in the filament of a lamp, the amount of current in the connecting wires is
A) definitely less. B) often less. C) actually more. D) the same. E) incredibly, all of the above
A light ray strikes a hexagonal ice crystal floating in the air at a 30° angle to one face, as shown below. The hexagonal faces of the crystal are perpendicular to the plane of the page. All the rays shown are in the plane of the page, and nice = 1.30. Which outgoing ray is the correct one?
a.
A
b.
B
c.
C
d.
D
e.
E