The elastic band on a catapultis pulled back 0.6 m. If the projectile in the catapult flies forward with a kinetic energy of 439 J, what is the spring constant (in N/m) of the elastic band? Note that the kinetic energy with which the projectile flies forwards is equal to the elastic potential energy of the band just before release.

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.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.