The accepted value for the speed of light in a vacuum is 2.99792458 x 10 ms. three groups of students made independent measurements of the speed of light ca (2.9870.002) x 10 ms-1 cg = (2.997 ± 0.005) × 108 ms-1 cc = (2.8999 ± 0.0005) × 108 m s-1 state which of the measurements is the most (i) accurate (ii) precise

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.