A star's parallax can reveal its distance. Stars with larger parallaxes are ________.
A. closer
B. the same distance as other stars
C. farther away
D. This is a trick question. Parallax cannot be measured for stars!
Answer: A
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Light takes about 8 minutes to travel from the sun to Earth and about 40 minutes to travel from the sun to Jupiter. Jupiter is about ____________________ AU from the sun
Fill in the blank(s) with correct word
What happens to the core of a star after a planetary nebula occurs?
A) It contracts from a protostar to a main-sequence star. B) It breaks apart in a violent explosion. C) It becomes a white dwarf. D) It becomes a neutron star. E) It can become either a neutron star or a black hole.
A 10.0-kg picture is held in place by two wires, the first one hanging at 50.0° to the left of the vertical and the second one at 45.0° to the right of the vertical. What is the tension in the first wire?
A) 69.6 N B) 50.8 N C) 98.1 N D) 69.4 N E) 23.8 N
Consider the curve f(x) = A cos(2?x/?). The wavelength of the wave will be:
a.
the distance 0 to A.
b.
twice the distance 0 to A.
c.
the distance x2 to x3.
d.
twice the distance x2 to x3.