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.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.