Suppose a rubber ball and a steel ball collide. which, if either, receives the larger impulse? explain.

From newton's second law of motion such that the rate of change in momentum is proportional to the resultant force, we indicate that the change in Momentum is equivalent to Impulse such that impulse is equal to the product of force and the time of impulse. That is impulse = force × time. 
Therefore impulse received by the rubber and steel ball when they collide will be the same as they experience the same time of impulse and also equal forces. 

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.

B? i think so but hope that's right and answers your question