What is the most accurate way to determine the distance to a very distant galaxy?

A) Stellar parallax
B) main-sequence fitting
C) white dwarf supernova
D) Cepheid variables
E) Hubble's law


D

Physics & Space Science

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How does the energy of atoms in a hot object compare to the energy of atoms in a cold object?

A. Hot object atoms have more chemical and kinetic energy B. Hot object atoms have more chemical energy C. Hot object atoms have more potential and kinetic energy D. Hot object atoms have more potential energy E. Hot object atoms have more kinetic energy

Physics & Space Science

An object may have potential energy because of its

A) speed. B) acceleration. C) momentum. D) location. E) none of the above

Physics & Space Science

The most important property of elastomers is the high elastic _________.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

The organisms called ______________ were the first organisms with eyes and were wiped out at the end of the Paleozoic era

Fill in the blank(s) with correct word

Physics & Space Science