If you are into astronomy and the solar system you understand that the planets are always in motion, right? In addition, explaining these motions is the Kepler's laws, right? Take up Practice Exam #2 and ascertain all these.
(a) Yes
(b) No.
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A
B
C
Option 4
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(a) The gravitational force exerted by the Earth equals the gravitational force exerted by the moon.
(b) The Earth.
(c) The Moon.
(d) Neither the Earth nor the Moon are exerting a gravitational force on the spacecraft when it is at point B.
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(a) The large space station
(b) The small satellite
(c) They would take the same amount of time
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(a) Driving in a straight line at 60 miles per hour
(b) Slamming on the brakes to come to a stop at a stop sign
(c) Going from 0 to 60 miles per hour in 10 seconds
(d) Driving 60 miles per hour around a curve
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A
B
C
D
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(a) retrograde motion of the planets using the geocentric theory.
(b) retrograde motion of the planets using the heliocentric theory.
(c) why the Earth’s north pole points towards Polaris.
(d) the changing of the seasons.
(e) none of the above.
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(a) Your mass will be greater on Earth and your weight will be the same.
(b) Your mass will be greater on Mars and your weight will be the same.
(c) Your weight will be greater on Earth and your mass will be the same.
(d) Your weight will be greater on Mars and your mass will be the same.
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(a) 2.55 A.U.
(b) 1.05 A.U.
(c) 0.74 A.U.
(d) 13.7 A.U.
(e) 1.41 A.U.
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(a) rise earlier than this star.
(b) rise at the same time as this star.
(c) rise later than this star.
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(a) Inner planets orbit the Sun at higher speed than outer planets.
(b) The Sun is located slightly off-center from the middle of each planet’s orbit.
(c) Earth is slightly closer to the Sun on one side of its orbit than on the other side.
(d) All the planets orbit the Sun in nearly the same plane.
(e) Pluto moves faster when it is closer to the Sun than when it is farther from the Sun.
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(a) perihelions; aphelions.
(b) days; kilometers.
(c) years; kilometers.
(d) days; astronomical units.
(e) years; astronomical units.
A
B
C
D
E
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(a) Asteroid A
(b) Asteroid B
(c) The force exerted by Asteroids A and B is equal.
(d) It is not possible to tell from the diagram.
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(a) Star A is further away than star B.
(b) Star B is further away than star A.
(c) Both the stars are at the same distance.
(d) It is impossible to tell without making more observations.
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(a) During only one of the portions shown.
(b) During two of the the portions shown.
(c) During all three portions shown.
(d) None of the above.
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(e) 100 arcseconds
(a) 1/25 arcseconds
(b) 1/50 arcseconds
(c) 1/100 arcseconds
(d) 50 arcseconds
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(a) 12 hours
(b) 1 day
(c) 1 month
(d) 6 months
(e) 1 year
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(a) The ball has a net force that is downward and a velocity that is downward.
(b) The ball has a velocity that is upward and an acceleration that is downward.
(c) The ball has a net force that is downward and an acceleration that is downward.
(d) The ball has a velocity that is zero and an acceleration that is zero.
(e) The ball has a net force that is downward and an acceleration of zero.
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(a) greater
(b) less
(c) the same
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(a) Planets rise in the west and set in the east. Over the course of several months, they appear to drift from east to west with respect to the distant stars.
(b) Planets rise in the east and set in the west. Over the course of several months, they appear to drift from east to west with respect to the distant stars.
(c) Planets rise in the west and set in the east. Over the course of several months, they appear to drift from west to east with respect to the distant stars.
(d) Planets rise in the east and set in the west. Over the course of several months, they appear to drift from west to east with respect to the distant stars.
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