You measure the parallax angle for a star to be 0.5 arcseconds. The distance to this star is
A) 0.5 light-year.
B) 2 parsecs.
C) 5 light-years.
D) 0.5 parsec.
E) 5 parsecs.
B
You might also like to view...
What did the International Astronomical Union classify Pluto as in 2006?
a. asteroid b. comet c. planet d. dwarf planet e. meteor
A person is dragging a packing crate of mass 100 kg across a rough horizontal floor where the coefficient of kinetic friction is 0.400. He exerts a force F sufficient to accelerate the crate forward
At what angle above horizontal should his pulling force be directed in order to achieve the maximum acceleration? A) 21.8° B) 27.7° C) 30° D) 34.5° E) 45°
The size of the electric current in an electrical conductor is a function of which of the following?
a. velocity of charge carriers b. conductor cross-sectional area c. density of charge carriers d. All of the above choices are valid.
The time before the Phanerozoic eon is collectively called ______________ time
Fill in the blank(s) with correct word