Ocean waves of wavelength 22 m are moving directly toward a concrete barrier wall at 4.0 m/s . the waves reflect from the wall, and the incoming and reflected waves overlap to make a lovely standing wave with an antinode at the wall. (such waves are a common occurrence in certain places.) a kayaker is bobbing up and down with the water at the first antinode out from the wall. a) how far from the wall is she? b) what is the period of her up and down motion?

The metric unit of electrical power is the watt volt ampere ohm

What is the measurement of how fast an object moves relative to a reference point?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?