Traumatic brain injury such as concussion results when thehead undergoes a very large acceleration. generally, anacceleration less than 800 m/s2 lasting for any lengthof time will not cause injury, whereas an acceleration greater than1000 m/s2 lasting for at least 1 ms will cause injury. suppose a small child rolls off a bed that is 0.40 m above the floor. if the floor is hardwood, the child's head is brought to rest in approximately 1.8 mm. if the floor is carpeted, this stoppingdistance is increased to about 1.2 cm. calculate the magnitude and duration of the deceleration in bothcases, to determine the risk of injury. assume that the childremains horizontal during the fall to the floor. note that a morecomplicated fall could result in a head velocity greater or lessthan the speed you calculate. hardwood floor magnitude image for traumatic brain injury such as concussion results when thehead undergoes a very large acceleration. generallyour answer differs from the correct answerby orders of magnitude. m/s2 duration mscarpeted floor magnitude image for traumatic brain injury such as concussion results when thehead undergoes a very large acceleration. generallyour answer differs from the correct answerby orders of magnitude. m/s2 duration ms

Need asap ! what is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? (2 points) as air pressure in an area increases, the density of the gas particles in that area decreases. as air pressure in an area increases, the density of the gas particles in that area increases. as air pressure in an area increases, the density of the gas particles in that area remains constant. as air pressure in an area increases, the density of the gas particles in that area increases and decreases in an alternating pattern. 3. which of the following correctly describes a way in which earth's atmosphere interacts with the geosphere? (2 points) it contains gases that living organisms breathe. it contains gases that trap incoming solar radiation. it provides a medium for cycles that provide nutrients to living organisms. it provides a medium for water to move between earth's surface and the air. 4. which of the following is considered a drawback to using wind energy as a source of power? (2 points) wind energy is nonrenewable. wind energy produces large amounts of air pollution. 5. a meteorologist predicts that the weather in a region will soon change from clear skies to probable thunderstorms. prior to making this prediction, what did the meteorologist most likely observe on a barometer? (2 points) the barometer fell slightly. the barometer fell substantially. the barometer rose slightly. the barometer rose substantially. 6. which of the following do meteorologists not typically use weather balloons to record? (2 points) atmospheric pressure cloud types humidity temperature 7. during which step in the can crush lab did water vapor force air from the can? (2 points) the can was filled nearly to the top with water. the can was placed on the hot stove top burner for several minutes. the can was removed from the hot stove top burner. the can was placed upside-down in the water-filled pan.

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.