The battery charger for an MP3 player contains a step-down transformer with a turns ratio of 1:38, so that the voltage of 114.5 V available at a wall socket can be used to charge the battery pack or operate the player. What voltage does the secondary coil of the transformer provide

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.