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A roller coaster starts from rest at a height h = 21 m at the left side of a loop-the-loop, as shown in the figure. It is not attached to the track in anyway, and there is no friction from the track or from air resistance. The radius of the loop is R = 6.0 m. What is the speed of the roller coaster at the top of the loop?

What is added to the anesthetic drug in the cartridge to make it water soluble?

What treatment is required if a patient experiences facial nerve paralysis from an injection?

Which nerve is anesthetized if the anterior 2/3 of the tongue is numb on one side?

Is the following statement true or false? Explain your reasoning. If the rockets of a spaceship in outer space (far from all gravity) suddenly lose power and go off, the spaceship will gradually slow to a stop.

Which local anesthetic drug is best for a patient with decreased liver function since it is metabolized in the plasma?

How many cartridges of 3% mepivacaine can be safely administered to a child weighing 50 lb?

What is the name of the depression along the anterior border of the ramus that is an anatomical landmark for the inferior alveolar injection?

Which ASA classification would be for a patient with well-controlled type I diabetes mellitus taking insulin injections?

Which level of sedation is used when a patient is unconscious but still may be able to respond to repeated stimulation?