Which of the following statements accurately describes oceanic electric fields? Electric fields in the ocean are weak and produce weak electric currents. Electric fields in the ocean are cause by the moon’s pull on earth. Electric fields in the ocean are strong and produce strong electric currents. Electric fields in the ocean are possible because ocean water is an insulator.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?