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

Physics & Space Science

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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.

Physics & Space Science

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

Physics & Space Science

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.

Physics & Space Science

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

Physics & Space Science