____________________ made very accurate observations of the positions and movements of the planets that were later used to help develop the Rudolphine Tables
Fill in the blank(s) with correct word
Tycho Brahe
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Once a star ejects a planetary nebula, it becomes a white dwarf
Indicate whether the statement is true or false
The position of an absorption or emission line is useful in determining the ____
a. temperature of an object b. distance to an object c. chemical composition of an object d. motion of an object across the observer's line of sight e. motion of an object toward or away from the observer
If the specific heat of water were lower than it is, ponds in the cold of winter would be
A) more likely to freeze. B) less likely to freeze. C) neither more nor less likely to freeze.
A stationary firecracker explodes, breaking into two parts of equal mass. One part is moving north at 20 m/s. The velocity of the other part is
A) 20 m/s with a direction that's impossible to predict without more information. B) also northward at 20 m/s. C) impossible to predict without more information. D) zero. E) southward at 20 m/s.