- A deep sea ocean vessel uses SONAR to
detect the ocean's bottom. Sound waves are
emitted from the surface of the ocean and
travel through the water at 1450 m/s. The
ocean bottom is 1630 m below the surface.
Determine the amount of time that passes
before the sound waves are reflected back to
the surface.

What do butterflies have on their feet which allows them to sense different strengths and types of nectar? a.mechanoreceptors b.acoustic receptors c.substratum receptors d.chemoreceptors

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

How do we measure or think of speed in the united states?