1.
something that delays or prevents progress, or the preventing of progress
2.
the opposition in an electrical circuit to the flow of alternating current, consisting of resistance and reactance.
3.
the ratio of the sound pressure in a medium to the velocity of the particles in the medium.
4.
a measure of how difficult it is for electricity to flow through a piece of electrical equipment
1.
something that delays or prevents progress, or the preventing of progress
2.
the opposition in an electrical circuit to the flow of alternating current, consisting of resistance and reactance.
3.
the ratio of the sound pressure in a medium to the velocity of the particles in the medium.
4.
a measure of how difficult it is for electricity to flow through a piece of electrical equipment