You are on the surface of an object, and you have a fairly clear view out into space. It might be very nice, except for one major drawback: You are very squashed
Also, light you observe from distant objects is apparently slightly blueshifted (compared to what it normally looks like). The surface of the object is composed primarily of carbon and oxygen, and the horizon distance is about the same as that on Earth. By observing the stellar background for a few weeks, you realize that there are several planets orbiting your object. Where are you? A) You are on the surface of Earth.
B) You are on the surface of a planet that is somewhat more massive than Earth.
C) You are on the surface of a white dwarf.
D) You are "on" an accretion disk around a black hole.
E) You are on the surface of a neutron star.
C
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Astronomers believe that most of the matter that makes up the universe is not detected by any part of the electromagnetic spectrum. This mysterious matter is called ______________
Fill in the blank(s) with correct word
The Schwarzschild radius of a 1- black hole is approximately
a. 3 km.
b. 1,500,000 km, the size of the Sun
c. 150,000,000 km or 1 AU.
d. 3 x 1013 km or 1 pc.
A(n) ______ is a group of formatting properties applied as a group to selected text.
A. template B. style C. palette D. design
A radioactive isotope with an atomic number of 92 undergoes alpha decay. What is the atomic number of the daughter nucleus?
A) 93 B) 90 C) 91 D) 94