Q9: A vibrating tuning fork is held over a water column with one end closed and the other open.
As the water level is allowed to fall, a loud sound is heard for water levels separated by 34 cm. If
the speed of sound in air is 340 m/s, the frequency of the tuning fork is: (***)

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

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?

When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is