Which of these does NOT exist?

A) a million solar mass black hole
B) a 6 solar mass black hole
C) a 6.8 solar mass neutron star
D) a 1.0 solar mass white dwarf
E) a 0.06 solar mass brown dwarf


C

Physics & Space Science

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The pair of water-filled caissons of the Falkirk Wheel have equal weights whenever

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Physics & Space Science