The mass of Neptune can be calculated from measurements of
A) Neptune's orbital period and its distance from the Sun.
B) the Sun's mass and how Neptune's speed changes during its elliptical orbit around the Sun.
C) the masses of Neptune's moons, Triton and Nereid.
D) the gravitational influence of Jupiter and Saturn on Neptune's orbit around the Sun.
E) the orbital period and distance of the moon Triton from Neptune.
E) the orbital period and distance of the moon Triton from Neptune.
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For an ideal inductor in an ac circuit, how much energy is stored in the inductor at the instant when the current is zero?
A. maximum B. 1?2 maximum C. 0.707 maximum D. zero
Compared to its rotational axis, Jupiter's magnetic field:
A) is exactly in alignment. B) lies about 10 degrees off, much like our own rotation and magnetic field. C) is tilted about 23.5 degrees, much like our own axial tilt. D) is tilted 98 degrees, much like the case of Uranus. E) has yet to be detected.
The Hertzsprung-Russell Diagram is a plot for stars using absolute magnitude versus temperature
a. True b. False Indicate whether the statement is true or false
Light that has all the electrical fields vibrating in the same plane is said to be ________
Fill in the blank(s) with correct word