Atypical adult ear has a surface area of 1.92 × 10-3 m2. the sound intensity during a normal conversation is about 2.13 × 10-6 w/m2 at the listener's ear. assume that the sound strikes the surface of the ear perpendicularly. how much power is intercepted by the ear?

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

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?

True or false graphs must include scales that increase by the same amount