A major force opposing the motion of a vehicle is the rolling resistance of the tires, Fr, given by Fr f w where f is a constant called the rolling resistance coefficient and w is the vehicle weight. Determine the power, in kW, required to overcome rolling resistance for a truck weighing 322.5 kN that is moving at 110 km/h. Let f 5 0.0069.
Belief In The Supernatural Magic and Religion -belief and rituals concerned with supernatural beings, powers and forces -belief in the supernatural is a cultural universal Why: -we don’t see it in other species -cultural understanding of the numinous -agnostic view: culturally relative means to explain the unexplainable Understanding The Supernatural Realm is Symbolic -The supernatural realm cannot be directly experienced -Requires mediation through objects or acts→ made into something physical Cross-Cultural Study of Religion and Magic -Social nature of beliefs and practices → who is included versus excluded, when-how-what happens, etc. -Manifestations/practice→ what happens, what objects are used -Meaning derived from practice Origins of Beliefs in the Supernatural -Circumstantial evidence → neanderthal burials (near east 90,000 years ago) -marked graves, intact bodies → european cave paintings (after 50,000 years ago) -hunting visuals Expressions of Beliefs and Practices in Supernatural Beliefs -animism: the belief in the supernatural world animating the material universe -mana: -taboo (ritual pollution) → forbidden behavior → supernatural repercussions → you’ve done something and your spiritual self has become polluted/dirty and you need to find a way to get clean again Practices -Magic: → application of a technique to create a particular outcome -Divination: → techniques/technology to determine why something is the way it is -Rituals: → scripted activities to placate of make the supernatural world do something