Ahard rubber rod is rubbed with wool and thus gains an approximately uniform net negative charge. the rubber rod is then suspended from a plastic string. a neutral (net charge zero) copper rod is also suspended from a plastic string and brought near the rubber rod. the rods never touch, and no spark jumps between the rods. the rubber rod and the plastic string are insulators (i. e., charge is not free to move through them). the copper rod is a conductor (i. e., charge is free to move through it).

which of the following best represents the charge distribution on the acrylic rod after the rubber rod is moved far away from the acrylic rod? 1) no charge 2) positive charge at the end it was rubbed on 3)negative charge at the end it was rubbed on 4) positive charge throughout 5) negative charge throughout 6) negative at one end and positive at the other is the net charge on the acrylic rod positive, negative, or zero? when the rubber rod was scraped, the net charge on the rubber rod changed or remained the same?

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts. ki k i = nothing ev request answerprovide feedback

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad