Why do models suggest that Uranus and Neptune formed elsewhere?
A) We do not have very good models.
B) The density of materials was too low in their current orbits for the ice giants to have formed there.
C) Jupiter and Saturn took up most of the material in the area; Uranus and Neptune must have formed elsewhere.
D) It is too cold at their current locations for the ice giants to have formed there.
B
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Indicate whether the statement is true or false
White light is spread out into spectral hues by a diffraction grating. If the grating has 1000 lines per cm, at what angle will red light (? = 640 nm) appear in first order?
A. 14.7° B. 7.35° C. 17.7° D. 3.67° E. 1.84°
A skydiver jumps out of a hovering helicopter. A few seconds later, another skydiver jumps out, so they both fall along the same vertical line relative to the helicopter. Both skydivers fall with the same acceleration. (Assume g is constant.) The vertical distance between them
1.increases. 2.decreases. 3.stays the same.
What charge appears on the plates of a 6.0-?F capacitor when it is charged to 40 V?
A) 60 ?C B) 120 ?C C) 180 ?C D) 240 ?C E) 350?C