An object of mass 5 kilograms is acted upon by the forces f1 and f2 as shown. the force f1 is 35 newtons and angle θ = –55°. find the magnitude of f2 needed to keep the object in equilibrium.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Which of the following is the best name for mgcl2