Rachel rides her bike east for 3.0 miles. she then turns around and rides west for 4.8 miles. what is her displacement?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?