The nebular theory of the formation of the solar system successfully predicts all but one of the following. Which one does the theory not predict?
A) Planets orbit around the Sun in nearly circular orbits in a flattened disk.
B) the compositional differences between the terrestrial and jovian planets
C) the equal number of terrestrial and jovian planets
D) asteroids, Kuiper-belt comets, and the Oort cloud
E) the craters on the Moon
C
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A radar pulse returns 5.0 × 10^?4 seconds after it is sent out, having been reflected by an object. What is the distance between the radar antenna and the object? (c = 3.00 × 10^8 m/s)
a. 1.5E+5 m b. 2.4E+5 m c. 7.5E+4 m d. 2.5E+4 m e. 4.3E+4 m
The ______________ distance is used in calculating work
a. normal b. square of c. perpendicular d. parallel
Element A, mass 10.00 g, reacts exactly with 2.00 g of element B to form 12.00 g of compound AB. If 5.00 g of element A is reacted with 2.00 g of element B to form the same compound, what mass of compound AB will be formed?
a. 7.00 g b. 6.00 g c. 17.00 g d. 12.00 g
Asteroids are thought to be
a. the remains of a planet between Mars and Jupiter that broke up. b. escaped small moons. c. leftover planetesimals from the inner solar system. d. leftover planetesimals from the outer solar system.