When you go to the dentist and he uses a drill on your teeth, the drill bit will have a diamond coating (outer layer). Explain why you think a diamond coating would be used on the outside of the drill bit.

Cultural, economic , and social changes that resulted in the migration of more people into cities - utilitarianism -industrial revolution -age of enlightenment

A5-year-old boy suddenly begins coughing while eating peanuts. he is choking and gagging. when he is brought to the ed, but he is awake and is able to give his name. on physical examination, his vital signs are stable. on examination of the chest, inspiratory stridor and intercostal and suprasternal retractions are apparent. which of the following is the most appropriate initial step in management? - allow patient to clear foreign object by spontaneous coughing- clear oropharynx with multiple blind sweeps with finger- position patient and perform back blows- stand behind patient and perform abdominal thrusts- perform emergency tracheostomy and take to surgery

About how many individuals in the us go bankrupt each year due to medical bills?