Q#1 The charge (coul) on an object incraese according to (q)= (2 coul) e [0.050/

Question

Q#1 The charge (coul) on an object incraese according to (q)= (2 coul) e [0.050/sec)(t)], where t is in seconds. How manyseconds is the object deficient 1.56*10upper20 electron (fromnuetral)? (A) 0 (B) 12.56 (C) 21.94 (D) 28.0 (E) 41.21 (A,B) 50.5 (A,C) 65.90 (A,D) 105.00 (A,E ) 874.00 (B,C) 1000.00 Q#1 The charge (coul) on an object incraese according to (q)= (2 coul) e [0.050/sec)(t)], where t is in seconds. How manyseconds is the object deficient 1.56*10upper20 electron (fromnuetral)? (A) 0 (B) 12.56 (C) 21.94 (D) 28.0 (E) 41.21 (A,B) 50.5 (A,C) 65.90 (A,D) 105.00 (A,E ) 874.00 (B,C) 1000.00

Explanation / Answer

Q = N e = 1.56 * 10E20 * 1.6 * 10E-19 = 24.96C    charge due to 1.56 * 10E20 electrons 24.96 = 2 * e.05 t 12.5 = e.05 t ln 12.5 = .05 t t = 2.52 / .05 = 50.5 sec ln 12.5 = .05 t t = 2.52 / .05 = 50.5 sec

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