The primary purpose of a telescope is to
A) collect a large amount of light and bring it into focus.
B) magnify distant objects.
C) separate light into its component wavelengths.
D) measure the brightness of stars very accurately.
E) make distant objects appear nearby.
A
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In vulcanized rubber, sulfur atoms ______________the latex long-chain molecules.
Fill in the blank(s) with the appropriate word(s).
The magnetic field and the number of turns of a coil of wire are doubled, while its area is reduced by a factor of 2. Assuming that all the other parameters remain the same, what happens to the induced emf in that coil of wire?
A) It is doubled. B) It is reduced by a factor of 2. C) It is quadrupled. D) It is reduced by a factor of 4. E) It stays the same.
Complete the equation: CH3CH = CH2+ H2? ____________________
Fill in the blank(s) with correct word
Subsurface soil that remains permanently frozen is called ______________
Fill in the blank(s) with correct word