Ocean waves are traveling to the east at 3.2 m/s with a distance of 19 m between crests. (a) with what frequency do the waves hit the front of a boat when the boat is at anchor? hz (b) with what frequency do the waves hit the front of a boat when the boat is moving westward at 1.5 m/s?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples