The cosmic microwave background radiation was released shortly after the formation of the first stars
a. True
b. False
Indicate whether the statement is true or false
False
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Which of the following is conserved?
a. Protons. b. Electrons. c. Element Identity. d. Atomic Number. e. Nucleons.
The fundamental frequency of a violin string is 440 hertz. The frequency of its second harmonic is
A) 220 hertz. B) 440 hertz. C) 880 hertz. D) none of the above
The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that ________
A) the planets are always accelerating B) a force is acting on the planets C) the planets will eventually fall into the Sun D) the planets have angular momentum
The Galilean moons are _______________ satellites because they are large and orbit close to their parent planet
Fill in the blank(s) with correct word