When two sound waves they can either add up or cancel out. By the way, this symbol () means blank as its just one-word that's missing from the question Thank You! :)

Which statement best explains why an object weight less on mercury than it does on earth

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?