The additive opposite is +1/2. The multiplicative opposite is -2.
There are no ends to a circle. A chord connects 2 ends of an arc though.
equalibrium
No one on earth knows. The universe hasn't been measured, and we may never reach the ends of the universe, if the universe ever ends.
A negative number. For example: -I -2 I = -2 because -2= 2 and the opposite of 2 is -2.
The opposite of "present" that ends in "ent" is "absent."
Antipodes are the opposite ends of the Earth, and hence of anything. Antipode and antipodal derive from it.
The opposite ends of a magnet are called poles. All magnets have them.
polar
Two ends (poles).
If a molecule has ends with opposite charges, it is usually referred to as a dipole, or polar.
the ends of the water molecule have opposite electrical charges
triangular prism
The five letter word that is the opposite of behind and begins with an 'a' and ends with a 'd' is AHEAD.
the opposite of present is presence or precedent
common
loud