4 In the figure shown a 2.0 g mass is suspended vertically (k še) by a 20 cm string in the presence of a uniform electric field. If E = (1x10´ )î`N/ C . If the mass carries a charge of +54 nC. Determine the angle at which the mass is in equilibrium A) 30° B) 25° C) 15° D) 45° 20.0 cm 2.00g
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