1) at an axial load of 22 kn, a 15‐mm‐thick x 45‐mm‐ide polyimide polymer bar elongates 3.0 mm while the bar width contracts 0.25 mm. the bar is 200 mm long. at the 22‐kn load, the stress in the polymer bar is less than its proportional limit. determine: a) the modulus of elasticity b) poisson’s ratio c) the change in the bar thickness

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element