Consider a thin rod of total charge Q and length L. The electric potential at point P, a distance x from the end of the rod, is given by V(x) = kQ L ln x + L x . Use this equation to find the electric field at a distance x from the end of the charged rod. (Enter the magnitude. Use the following as necessary: k, Q, x, and L.)

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?