A bar magnet is separated four times, the number of monopoles and dipoles formed are __. [the answer is 0 monopoles and 4 dipoles, but I think it should be 8 dipoles.]
Kindly Help me understand !

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.