D www.webassign.net/web/student/Assignment-Responses/Mast?dep 15834842 es, becau

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D www.webassign.net/web/student/Assignment-Responses/Mast?dep 15834842 es, because the change in potential will vary depending on the path chosen Yes, because the work done depends only on the length of the path chosen. Need Help? Read It 4. -18 points My Notes Ask Your Teacher A proton is fired from very far away directly at a fixed particle with charge q 1.88 x 10 C. If the initial speed of the proton is 2.3 x 105 m/s, what is its distance of closest approach to the fixed particle? The mass of a proton is 1.67 x 10 27 kg. Need Help? Read It L Watch It My Notes Ask Your Teacher 5. -18 points A coaxial cable is formed by a long, straight wire and a hollow conducting cylinder with axes that coincide. The wire has charge per unit length o, and the hollow cylinder has net charge per unit length 51 Use Gauss's law to answer 40 A ENG 2/19/2017 Ask me anything

Explanation / Answer

q= 1.88*10^-18C

Initial velocity v= 2.3*10^5 m/s

Initial energy = 0.5*1.67*10^-27 *2.3*2.3*10^10

Final energy = 9*10^9 * 1.88*1.88*10^-36/d

So, d = 18*1.88*1.88*10^-10 /(1.67*2.3*2.3)

d = 7.2*10^-10 m

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