Kepler's second law tells us that a planet sweepa out equal areas in equal times. If you compare the amount of area per time swept by Earth with the one of Jupiter, you would conclude:
A)
They sweep the same area per time.
B)
Jupiter sweeps a larger area per time because it has much more mass than Earth.
C)
Jupiter sweeps a larger area per time because it has a much larger orbital path than Earth.
D)
Earth sweeps a larger area per time because it has much less mass than Jupiter.
E)
Earth sweeps a larger area per time because it has a much smaller orbital path than Jupiter.
C
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Kepler’s second law implies that as a planet’s distance from the sun increases in an elliptical orbit, its orbital speed
A. Increases. B. Decreases. C. Remains the same. D. Changes in a way we cannot determine.
An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration. The object travels 12.0 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object?
A) -12.0 m/s2 B) 24.0 m/s2 C) -4.00 m/s2 D) 4.00 m/s2 E) 8.00 m/s2
Which of the following is not considered a likely solution to the question of why we are not currently aware of a galactic civilization?
A) There is no galactic civilization because civilizations are not common. B) There is no galactic civilization because civilizations do not leave their home worlds. C) The galactic civilization is deliberately avoiding contact with us. D) The galactic civilization probably is undetectable to us because it makes use of technologies that do not obey the known laws of physics. E) There is no galactic civilization because most civilizations destroy themselves before achieving interstellar travel.
In the United States, the value of ? for commercially generated power is ________ in SI units
a. 50 b. 60 c. 120 d. 377