An equilateral triangle with side lengths of 0.50 m has a 5.0 nc charge placed at each corner. what is the magnitude of the electric field at the midpoint of one of the three sides? (a) 240 n/c (b) 180 n/c (c) 720 n/c (d) 480 n/c (e) 120 n/c

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.