At what distance from a point charge of 14 mC would the electrical potential be 4.2 × 10^4 V? (ke = 8.99 × 10^9 N×m2/C2)

a. 0.76 m
c. 3.0 m
b. 0.58 m
d. 1.7 m


C

Physics & Space Science

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If the dielectric breakdown field in air is 3 × 10^6 V/m, what potential difference is involved with a 3 cm spark?

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A particle (m = 50 g, q = 5.0 ?C) is released from rest when it is 50 cm from a second particle (Q = ?20 ?C). Determine the magnitude of the initial acceleration of the 50-g particle.

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