The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s velocity is positive in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
a
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Conversion of Units: A light-year (ly) is the distance that light travels in one year. The speed of light is 3.00 × 108 m/s. How many miles are there in 1.00 ly? (1.00 mi = 1.609 km and one year is 365.25 days.)
A. 2.87 × 1013 mi B. 9.46 × 1015 mi C. 5.88 × 1015 mi D. 9.46 × 1012 mi E. 5.88 × 1012 mi
The brightest and probably youngest surface of any moon of Saturn belongs to
A) Iapetus. B) Mimas. C) Tethys. D) Enceladus. E) Titan.
After Mars, the next most likely candidates for life in the solar system are
A) comets in the Kuiper-belt. B) the large moons of the Jovian planets. C) the atmospheres of the Jovian planets. D) the largest asteroids. E) comets in the Oort cloud.
Two parallel flat planes of positive charge are separated by a distance d. Plane #1 has charge density ?1 and plane #2 has a charge density ?2. ?1> ?2
(a) In the region between the planes, the magnitude of the electric field is (b) In the region outside the planes the magnitude of the electric field is