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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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
____________________ 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
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