Suppose you are standing at the exact center of a park surrounded by a circular road. an ambulance drives completely around this road, with siren blaring. how does the pitch of the siren change as it circles around you?

Which of the following represents an upside-down image?

Atomic nuclei of almost all elements consist of

Arocket starts from rest and moves upward from the surface of the earth. for the first 10.0 s of its motion, the vertical acceleration of the rocket is given by ay = 12.80 m/s32t, where the +y-direction is upward. (a) what is the height of the rocket above the surface of the earth at t = 10.0 s? b) what is the speed of the rocket when it is 325 m above the surface of the earth?