Eighty-eight prominent groups of stars in the sky are called the ______________
Fill in the blank(s) with correct word
constellations
You might also like to view...
A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano string very slightly and then hear 3 beats/second. What is the frequency of the piano string?
A) 1053 hertz B) 1054 hertz C) 1056 hertz D) 1058 hertz E) 1059 hertz
What is the ultimate fate of an isolated white dwarf?
A) It will cool down and become a cold black dwarf. B) As gravity overwhelms the electron degeneracy pressure, it will explode as a nova. C) As gravity overwhelms the electron degeneracy pressure, it will explode as a supernova. D) As gravity overwhelms the electron degeneracy pressure, it will become a neutron star. E) The electron degeneracy pressure will eventually overwhelm gravity and the white dwarf will slowly evaporate.
One unusual aspect of dark energy is
A) its pushes outward on everything in the universe instead of pulling inward as gravity ordinarily does. B) it's made of a material that has not yet been observed in our laboratories. C) Both of the above. D) it exerts no gravitational force. E) it exerts a new kind of fundamental force, never observed before.
What is the speed of a proton if its mass is twice its rest mass?
A) 0.25c B) 0.50c C) 0.68c D) 0.73c E) 0.87c