It is found that a 5.70 m segment of a long string contains three complete waves and has a mass of 180 g. the string is vibrating sinusoidally with a frequency of 55.0 hz and a peak-to-valley distance of 19.0 cm. (the "peak-to-valley" distance is the vertical distance from the farthest positive position to the farthest negative position). calculate the wavelenght.

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.