The Vespertilionidae family of bats detects the distance to anobject by timing how long it takes for an emitted signal to reflect off the object and return. Typically the bats emit sound pulses 3ms long and 70 ms apart while cruising. For the purposes of this question, assume that the bat is stationary. (a) If an echo is heard 60 ms later (vsound = 331 m/s), how far away is the object? (b) When an object is only 30 cm away, how long will it be before the echo is heard? (c) Will the bat be able to detect this echo?