Question 14. Two oppositely charged parallel plates have an electric potential difference of 1.2 x 10² V across them. The plates are 4.5 x 102 m apart. An alpha particle enters the region between the plates through a hole in the negatively charged plate and comes to rest just before it reaches the positively charged plate. Positively charged plate Negatively charged plate Path of alpha particle Determine the initial speed of the alpha particle as it enters in between the parallel plates.

1. A conservative force a) Is path independent b) Is not affected by friction c) produces work  d) all of the above   2. Inside two parallel plates, an electron moves to the right.  a) The right plate is positive. b) The left plate is positive. c) The electron partially discharges the right plate. d) All of the above.   3. You pay for electricity a) because electrons are consumed. b) because protons are consumed. c) because electrons slow down. d) because protons slow down.

Question 3 Two particles of equal mass 35 mg and equal charge 20 nC are brought from an infinite distance apart until they are only separated by 8 x 10-10 meters. The particles are released from rest. What speed will they have when they are very far apart from one another? Speed = Question Help: Message instructor Submit Question Question 4 DU= DU= m/s Joules eV During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud Vground= 1.2 x108 Volts. What is the change in potential energy of an electron as it moves from the cloud to the ground? 1519 Details Bo Question Heln: Message instructor 1519 Details

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