An atom with 6 protons and 6 neutrons is a carbon atom, and an atom with 6 protons and 7 neutrons is also a carbon atom.
Answer the following statement true (T) or false (F)
True
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Which of the following best distinguishes the Kuiper belt from the Oort cloud?
A) Both are made up of many comets, but Kuiper belt comets orbit within a donut-shaped region just beyond the orbit of Neptune, while Oort cloud comets orbit much farther from the Sun and can have orbits of all inclinations. B) The Kuiper belt is made up of rocky asteroids, while the Oort cloud is made up of icy comets. C) The Kuiper belt is located between the orbits of Mars and Jupiter, while the Oort cloud lies far beyond Neptune. D) The Kuiper belt consists of only of very large comets (similar in size to Pluto), while the Oort cloud consists only of very small comets.
Which of these does NOT exist?
A) a million solar mass black hole B) a 6 solar mass black hole C) a 6.8 solar mass neutron star D) a 1.0 solar mass white dwarf E) a 0.06 solar mass brown dwarf
The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. What is the mass of Jupiter? (G = 6.67 × 10-11 N ? m2/kg2 )
A) 1.33 × 1027 kg B) 1.50 × 1027 kg C) 1.72 × 1027 kg D) 1.89 × 1027 kg E) 3.08 × 1027 kg
Water pressurized to 3.5 × 10^5 Pa is flowing at 5.0 m/s in a horizontal pipe which contracts to 1/3 its former area. What are the pressure and velocity of the water after the contraction?
a. 2.5 × 10^5 Pa, 15 m/s b. 3.0 × 10^5 Pa, 10 m/s c. 3.0 × 10^5 Pa, 15 m/s d. 4.5 × 10^5 Pa, 1.5 m/s e. 5.5 × 10^5 Pa, 1.5 m/s