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.
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.
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Nuclear Binding Energy: One of the fusion reactions that occurs in the sun is:
The following atomic masses are known:
What is the reaction energy released in this fusion reaction? (1 u = 931.5 MeV/c2)
A. 11 MeV B. 13 MeV C. 15 MeV D. 17 MeV E. 19 MeV
A(n) ______________is denser than a neutron star
Fill in the blank(s) with correct word
A parent pushes a small child on a swing so that the child moves rapidly away while the parent remains at rest. How does the magnitude of the force that the child exerts on the parent compare to the magnitude of the force that the parent exerts on the child?
A. The force on the child is larger in magnitude. B. The force on the parent is larger in magnitude. C. These forces have equal magnitudes. D.The child exerts zero force on the parent. E.There is no way to tell.
A block of mass M slides down a frictionless plane inclined at an angle ? with the horizontal. The gravitational force is directed
A) parallel to the plane in the same direction as the movement of the block. B) parallel to the plane in the opposite direction as the movement of the block C) perpendicular to the plane. D) toward the center of the Earth. E) toward the center of mass of the block.