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Two very small metal point-like spheres with masses 5 g and 9 g are tied together by a 8 cm long massless string and are at rest on a frictionless surface. Each is charged to 11 uC. i.What is the energy (in J)of this system? a)13.6 b)20.4 c)44.4 d)11.8 e)5.31 f)28.7   ii.What is the tension (in N) in the string? a)555 b)359 c)170. d)66.4 e)148 f)255   iii.The string is cut. What is the speed (in m/s) of each sphere when they are far apart? (HINT: You will need to use TWO conservation laws here. One of them is Energy Conservation). Speed of m1 a)23.1 b)125 c)59.2 d)88.7 e)193 f)51.5 Speed of m2 a)69.4 b)107 c)32.9 d)12.8 e)28.6 f)49.3

Two very small metal point-like spheres with masses 5 g and 9 g are tied together by a 8 cm long massless string and are at rest on a frictionless surface. Each is charged to 11 uC. i.What is the energy (in J)of this system? a)13.6 b)20.4 c)44.4 d)11.8 e)5.31 f)28.7   ii.What is the tension (in N) in the string? a)555 b)359 c)170. d)66.4 e)148 f)255   iii.The string is cut. What is the speed (in m/s) of each sphere when they are far apart? (HINT: You will need to use TWO conservation laws here. One of them is Energy Conservation). Speed of m1 a)23.1 b)125 c)59.2 d)88.7 e)193 f)51.5 Speed of m2 a)69.4 b)107 c)32.9 d)12.8 e)28.6 f)49.3

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Two very small metal point-like spheres with masses 5 g and 9 g are tied together by a 8 cm long massless string and are at rest on a frictionless surface. Each is charged to 11 uC.

i.What is the energy (in J)of this system?
a)13.6 b)20.4 c)44.4 d)11.8 e)5.31 f)28.7

 

ii.What is the tension (in N) in the string?
a)555 b)359 c)170. d)66.4 e)148 f)255

 

iii.The string is cut. What is the speed (in m/s) of each sphere when they are far apart? (HINT: You will need to use TWO conservation laws here. One of them is Energy Conservation).
Speed of m1
a)23.1 b)125 c)59.2 d)88.7 e)193 f)51.5
Speed of m2
a)69.4 b)107 c)32.9 d)12.8 e)28.6 f)49.3
 
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