The average density of each planet in the solar system is determined by taking its mass and dividing that by its

A) radius.
B) diameter.
C) surface area.
D) radius squared.
E) volume.


E

Physics & Space Science

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____________________ are groups of 100,000 to 1,000,000 population II stars firmly bound by gravity

Fill in the blank(s) with correct word

Physics & Space Science

A lunar eclipse does not occur at every full moon because

What will be an ideal response?

Physics & Space Science

To rotate a stubborn screw, it is best to use a screwdriver that has a

A) wide handle. B) long handle. C) smooth handle. D) none of the above

Physics & Space Science

The possibility of extraterrestrial life was first considered

A) after the invention of the telescope B) only during the past few decades C) thousands of years ago during ancient times D) at the turn of the 20th century

Physics & Space Science