Question

1 what is paralactic second?

2 which one of the following quatities has not been expresed in proper units?

a) micro second

b) leap year

c) lunar months

d) paralactic seconds
ans me quickly its urgent ...

Answer 1

Answer:

Parallactic second is the unit of distance because parallactic second is abbrevistion of parsec. Parsec = Parsec is the unit for larger distances.It is the distance at which a star would make parallax of one second of arc.