8 O -0 points CJ10 18 P064 00 The masses of the earth and moon are 5.98 x 1024 a

Question

8 O -0 points CJ10 18 P064 00 The masses of the earth and moon are 5.98 x 1024 and 7.35 x 1022 kg, respectively. Identical amounts of charge are placed on each body, such that the net force (gravitational plus electrical) on each is zero. What is the magnitude of the charge placed on each body? Select GO Tutorial Additional Materials Ll Section 181 10. 0 -10 points CJ10 18 PO6B My Notes Ask Your Teacher When point charges q? " +8.7 pC and 02 +5.1 ?C are brought near each other, each experiences a repulsive force of magnitude 0.73 N. Determine the distance between the charges. Additional Materials L Section 18.1 11. O-0 points C/10 18 PO74 My Notes Ask Your Teacher Four point charges have equal magnitudes. Three are positive, and one is negative, as the drawing shows. They are fixed in place ht line, and adjacent charges are equally separated by a distance d. Consider the net electrostatic force acting on each charge. Calculate the ratio of the largest to the smallest net force. to

Explanation / Answer

Problem 9)

Gravitational Force, Fg = G* m1*m2 / r2 = 6.67* 10-11 * 5.98 * 1024 * 7.35 *1022 / r2 =   2.93* 1037 /r2 N

Electrostatic Force, Fe   =   (1/4??0)* q1 * q2 / r2

   given   q1   =   q2   =   Q

   Fe   =   8.99* 109 * Q2 /r2 N

   Comparing 2.93* 1037 /r2 = 8.99 *109 * Q2 / r2

   Q   =   ?(2.93* 1037 / 8.99 * 109)

Charge placed on each body, Q = 5.71* 1013 C

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