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Guideline: 1. Full]: display your working out, presenting the steps taken, clearly and correctly Data relating to the densityr and the speed of sound for different types of material is shown below. m _ 145*] 1a} Calculate the acoustic impedance of l] Fat ii} Bone 1b} Calculate the proportion of the ultrasound that is transmitted when ultrasound is incident on a boundaryr between fat and bone. 1c} An uitrasound probe transmits a pulse of ultrasound of equcucy, E = lllll'll'll IVE-I2. The reected signal is found to have a equencjtr f. = 10.305 MHZ. The speed of sound in tissue is 1455] ms'1 and the angle between the probe and the artecrj,r is 45\". skin surface _'I Calculate the speed of ow of the blood