Answers only ? 001 (part 1 of 2) 10.0 points Two charges are located on a horizo

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Answers only ?

001 (part 1 of 2) 10.0 points Two charges are located on a horizontal axis. 1.5 m 2.7 HC 2.7 C 3 m. 3 m. Determine the electric field at p on a vertical axis as shown in the figure, where up is positive The Coulomb constant is 8.98755 x 109 N. m2/C2. Answer in units of V/m 002 (part 2 of 2) 10.0 points Find the vertical component of the electric force on a -3.8 C charge placed at point p Answer in units of N 003 10.0 points Two charges are located in the (a, y) plane as shown. The fields produced by these charges are observed at a point p with coordinates (0,0) 1.6 m 1.5 m 9 C 8.8 C 2.1 m Find the component of the electric field at p. The value of the Coulomb constant is 8.98755 x 109 N. m2/C2 Answer in units of N/C

Explanation / Answer

1) by symmetry only y component

Ey = 2 E sin theta = 2*9.0E9*2.7E-6/(3^2 + 1.5^2) * 1.5/sqrt(3^2 + 1.5^2)= 1932 V/m

2) Fy = q Ey = -3.8E-6*1932=-7.34E-3 N

3) sum x components

Ex = 9.0E9*8.8/(2.1^2 +1.6^2)*2.1/sqrt(2.1^2 + 1.6^2)-9.0E9*9/(2.1^2 +1.5^2)*2.1/sqrt(2.1^2 + 1.5^2)

Ex = -8.58E8 N/C

5) if stationary
qE - mg = 0

q = mg/E = 2.44898E-13*9.81/1.0E6=2.40E-18 C

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