echolocation is a form of sensory perception used by animal such as bats tooted whales and dolphins . the animal emits and a pulse of sound (longitudinal wave) which after reflection from objects returns and is detectd by the animal echolocation waves can have frequencies of about 100,000 Hz. (A) estimate the wave length of a sea animal echolocation waves. (B) if an obstacle is 100m from the animal. how long after the animal emits a wave is its reflection defeated​