A 25 Kg box is pulled by a rope at an angle of 30 degrees above horizontal with a force of 50 Newtons. if the coefficient of kinetic friction is .15. What is the total force of friction acting on the box? Using the information above, what is the acceleration of the box in the X-direction??

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.