Two bar magnets are labeled a and b. the ends of each magnet are numbered 1 or 2, but the poles are not labeled. when a1 is brought near b1, the bars repel. which conclusion is best supported by the data? a) a1 is the north pole of a magnet, and b1 is the south pole of a magnet. b) a1 is the north pole of a magnet, and b1 is the north pole of a magnet. c) a1 and b1 are opposite poles, but there is not enough information to tell which ones. d) a1 and b1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

D) A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

Explanation:

When A1 is brought near B1 the bars will repel each other

As we know by the properties of magnet that when two bars are of similar nature then they will repel each other

so here A1 and B1 are of same type

so correct option must be

D) A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me