solve number 19 The round Determine the value of the energy released, Q mass val

Question

solve number 19 The round Determine the value of the energy released, Q mass values: He, 4.002 603 : H, 2.014 102 u u-931 494 MeVic2 A) 957.154 8 Mev B) 23.847 Mev C)3 740.553 Mev D) 0.000 000 Mev E) 1 852 27 Mev 18) The electron-volt is a unit of A) electric field. B) electric force. potential. D) energy charge. 2d 19) Two point charges of magnitude q1-+4.00 C and q2° +2.00 HC are placed at the opposite con of a rectangle where d - 0.400 m as shown in the above figure. What is the potential at point B to these charges? A) +1.12x10 11 V B) +1.12x105v C)-1.12x10 11 v D) -1.12x105 v E) +1.25 x10-5 v

Explanation / Answer

part b ) is the answer 1.12 × 105 V

i have used formula for potential

V1 =kQ1/r. where r = d = 9* 10 ^ 4

V2 = KQ2/r where r = 2d = 2.25 * 10 ^ 4

then we add them up we get 1.12 × 105 V

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