1. Two particles are fixed to an x axis:particle 1 of charge -4.06 × 10-7 C is at theorigin and particle 2 of charge +4.06 × 10-7 Cis at x2 = 12.7 cm. Midwaybetween the particles, what is the magnitude of the net electricfield?
2. An electron with a speed of 4.59 ×108 cm/s in the positive direction ofan x axis enters an electric field ofmagnitude 2.67 × 103 N/C, travelingalong a field line in the direction that retards itsmotion. (a) How far will the electrontravel in the field before stopping momentarily,and (b) how much time will haveelapsed? (c) If the region containingthe electric field is 7.11 mm long (too short for theelectron to stop within it), what fraction of the electron’sinitial kinetic energy will be lost in that region?
3. A charged cloud system produces an electric field in theair near Earth's surface. A particle of charge -2.4 ×10-9 C is acted on by a downward electrostaticforce of 3.6 × 10-6 N when placed in thisfield. (a) What is the magnitude of theelectric field? (b) What is themagnitude of the electrostatic force on a proton placed in thisfield? (c) What is the gravitationalforce on the proton? (d) What is theratio of the electrostatic force to the gravitational force in thiscase?
1. Two particles are fixed to an x axis: particle 1 of charge -4.06 × 10-7 C is at the origin and particle 2 of charge +
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1. Two particles are fixed to an x axis: particle 1 of charge -4.06 × 10-7 C is at the origin and particle 2 of charge +
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