Which of the following is true of the Sun?
A) It is a self-luminous body of hot gas.
B) It is the first planet of the Solar System.
C) It shines by reflecting light from the Moon.
D) It is the biggest star in the Universe.
A
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Answer the following statement true (T) or false (F)
A vector starts at coordinate (3.0, 4.0) and ends at coordinate (?2.0, 16.0). What are the magnitude and direction of this vector?
What will be an ideal response?
Water pressure on a submerged object is greatest against its
A) top. B) bottom. C) sides. D) same against all surfaces E) none of the above
Most of first extrasolar planets found were detected by
A) noting the drop in the star's light as the planet transits its disk. B) imaging them with the HST in the infrared, where they are easier to stop. C) noting the Doppler shifts of the star as the planet orbits it from side to side. D) receiving radio transmissions from them, much like Jupiter emits. E) detecting the oxygen in their atmospheres spectroscopically.