Spontaneous radioactive decay occurs only when the decay products have less mass than the parent, and it tends to produce a daughter that is more stable than the parent. Explain how this is related to the fact that more tightly bound nuclei are more stable. (Consider the binding energy per nucleon.)
Chapter 1: What is Sound The Very First Steps 1. We use the word “sound: to describe at least two different things: a. Sensation of the auditory nerve of our ear. i. Means what we actually perceive. b. The wave. i. Traveling through the medium which somehow causes the sensation of hearing. 2. Acoustics is a science of sound. a. Acoustics is an interdisciplinary science which includes Physics, Engineering, Theory of Music, Psychology, Physiology, Architecture, and the study of sound we cannot hear: Ultrasound and Infrasound Acoustics. Sound Around Us 1. Three types of sound around us: a. Noise i. Is an unorganized, usually unpleasant sound, often of a very distinguishable nature our hearing. b. Music i. Is a combination of sounds that we choose to hear for our enjoyment. ii. Usually it is based on welldefined pattern of sounds. iii. Does not carry information, only emotions; the message of music is very abstract and strongly depends
