Orphan planets will most likely be found using which method used for finding exoplanets?
A) Doppler
B) transit
C) microlensing
D) astrometric
C
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Which of these observations helped test the idea that Mars' atmosphere thinned due to interactions with the solar wind?
A) The MAVEN orbiter measured present-day gas loss from Mars' atmosphere. B) The Curiosity rover measured the carbon content of rocks on Mars' surface. C) Astronomers used spectrographs on the Keck telescope to measure the density of Mars' atmosphere. D) Geologists measured the carbon content of Martian rocks that were transported to Earth by asteroid impacts.
A less intense sonic boom at ground level can occur if the aircraft
A) is smaller. B) flies higher. C) is more streamlined. D) all of the above E) none of the above
Water has a specific heat value of ______________
Fill in the blank(s) with correct word
Express (4.3 × 106)-1/2 in scientific notation
A) 2.1 × 103 B) 2.1 × 104 C) 2.1 × 10-5 D) 4.8 × 10-4