Military submarines incorporate multiple technologies in order to remain silent and undetected in the water. Submarine crews are cautioned not to make loud sounds or drop tools or equipment to avoid detection. Use what you have learned about the factors that affect sound transmission to explain why submarines have to be careful not to make sounds while other military craft, such as airplanes or tanks, don't have to worry about the sounds they make? Use evidence and scientific reasoning to support your response

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.