Which term is described as small, icy bodies that orbit the Sun just beyond Neptune?
a. Kuiper belt objects
b. asteroid belt objects
c. Oort cloud objects
d. Jovian belt objects
e. Neptunian belt objects
a
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A radioactive isotope that emits a gamma quantum will change in what respect?
a. Atomic number increases by one. b. Atomic number decreases by one. c. Atomic mass number decreases by one. d. None of the above choices are valid.
The very first stars in the universe were made of
A) hydrogen and helium. B) hydrogen and helium, 10% heavy elements. C) hydrogen and helium, 0.1% heavy elements. D) hydrogen and helium, 2% heavy elements.
A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the mass is at the lowest point on the circle, the speed of the mass is 12 m/s. What is the magnitude of the force of the string on the mass at this position?
a. 31 N b. 36 N c. 41 N d. 46 N e. 23 N
A planet is much more massive than the star it orbits
a. True b. False Indicate whether the statement is true or false