It takes about 1032 hydrogen atoms to make a star
Indicate whether the statement is true or false
FALSE
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The Moon's crust is thicker on the side facing Earth
a. True b. False Indicate whether the statement is true or false
To calculate the masses of stars in a binary system, we must measure their
A) spectral types and distance from Earth. B) absolute magnitudes and luminosities. C) luminosities and distance from Earth. D) orbital period and average orbital distance.
What is the origin of short gamma ray bursts?
A) the collision of stars in the dense nuclei of distant galaxies B) new stars forming in the Milky Way C) very powerful supernovae occurring in distant galaxies D) supernovae in the Milky Way E) It is not known, but it may be the collision of a neutron star with a black hole.
Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?
a. accelerates b. moves at the speed of light c. moves at constant velocity d. moves parallel to a uniform magnetic field