Exam #1

the amount of energy to move an object Force = mass x acceleration

force over area, increasing the area in which force is applied results in a lower pressure P=f/a

transfer of energy by a force acting on an object as it is displaced W=Fs (force*displacement)

the capacity to do work or the exertion of force (potential +kinetic energy)

amount of energy transferred or converted per unit time P= force/velocity

newton

pascal (Pa)

joule

joule

watt

energy transfer between 2 objects in direct contact Ex- touching a cold surface

air passing by aka wind chill Body heat is lost to surrounding cold air. The surrounding air becomes warmer and rises; cool air falls and replaces the warm air (it’s a current/cycle).

electromagnetic transfer of energy away from a warm body– biggest contributor

liquids on skin evaporate, utilizing energy to turn liquid to vapor

head is always perfused and major contributor to radiation heat loss, so it should be covered

covering the patient with warm blankets forced air warming device Close air vents to prevent a draft

preheat the OR table Cover the table with blankets if possible

HME, air humidifier on airway circuit Be careful when scrubbing the surgical site with CHG, prep necessary sites only

objects have a tendency to maintain velocity unless acted on by unbalanced force Law of inertia

blood loss-blood will have the tendency to maintain velocity, unless acted upon, such as clots or external pressure Trauma- a gunshot will stay in motion unless acted upon, such as a skull.

F=m*a Force= mass • acceleration

pressure bag for fluids force=mass of fluid*velocity of fluid

Celsius + 273.15= Kelvin

for every action, there is an equal and opposite reaction Law of reciprocal action