Jack runs 400 yards due South and 300 yards due West to get to school. What's the magnitude of the displacement from Jack's home to the school (in yards)?
600 yards
450 yards
500 yards
700 yards

Asteady current of 1 ais flowing through a conducter calculate the number of electrons that flows through conductor in 1second

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th