The part of the universe we can see is referred to as the
A) observable universe
B) Milky Way
C) entire universe
D) multiverse
C
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Does Venus’s surface experience meteorite impacts today? How do you know?
a. Yes. This is confirmed by Venus’s atmospheric composition, especially the abundance of deuterium. b. Not many. Since the atmosphere of Venus is very thick, most meteorites cannot reach the surface of Venus. c. No. Since Venus does not have a magnetic field, it does not attract meteoroids onto its surface. d. Yes. Meteorites fall onto Venus’s surface often because of the planet’s slow retrograde rotation and absence of moons.
Small deviations in a planet's orbital motion:
A) show we don't fully understand gravitational forces yet. B) indicate the presence of an extensive atmosphere. C) indicate the presence of a powerful magnetic field. D) imply the nearby presence of a massive body. E) show the planet's orbit isn't stable.
An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the point of origin of the flight. The plane flies with an airspeed of 120 m/s
If a constant wind blows at 10 m/s toward the west during the flight, what direction must the plane fly relative to the air to arrive at the destination? A) 4.8° west of north B) 85° west of north C) 4.8° east of north D) 5.9° west of north E) 5.9° east of north