Assume the average separation between any two adjacent foams is ds = 4.8 mm. The gap distance, dg, between the two transducers can hold a maximum of 5 tiny foams. Given that the velocity of the air is va = 335m/s. Estimate the frequency, fs (kHz), emitted by transducers. (4 marks)
c) Refer to part (b), a student wrote a simple program to shift the frequency of the transducers so that the new average separation between any two adjacent foams decreases to 4.5 mm. Estimate the new frequency generated by the transducers. (2 marks)
d) Refer to part (b), estimate the lowest frequency generated by the transducers that can hold almost 2 tiny foams between the gap of the transducers. (5 marks)