Which diagram best shows the field lines around two bar magnets attracting
each other?

Answer A is correct

Explanation:

Each bar magnet has a south pole and a north pole.

When two poles approach one another , their magnetic field lines link up causing a strong force which reduces its overall energy as the two become closer.

This is why opposite magnetic poles attract one another.

B shows a single magnet, but field lines are opposite of the standard directions.

C shows two magnets with common poles together, the magnetic lines do not link up and actually repel one another. "This here town's not big enough for the both of us" As hats are lowered over brows and twitchy hands hover over holsters.

D shows a correct magnet with standard field lines, but the question asks about two different magnets.

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb