If a box weighing 520 n is hung from a spring whose constant is 650 n/m, how many centimeters will the spring stretch?

Spring elongation,x= F/k=520/650=0.8 m =80 cm

Aform of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space. there are many forms of  electromagnetic  energy including gamma rays, x rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.