Please provide a handwritten explination to solve the following questions. 1. An ultrasound wave pulse has a spatial pulse length of 0.9 mm and it contains 3 cycles. What is the wavelength of each cycle in the pulse?Spatial pulse length is Select an answer inversely proportional unrelated directly proportional to the cycle frequency.(inverse, direct, unrelated) 2. What is the pulse repetition frequency of a pulsed wave that has a pulse repetition period of 0.37 ms? (Answer must be in PRF= _____kHz. ) A sonographer adjusts the signal to increases the depth of view. This means that the pulse reperition (increase/decrease) and the pulse repetition frequency (increase/decrease) 3. The pulse duration of a pulsed wave is 1.02 s, and the pulse repetition period is 0.15 ms. What is the duty factor? (Duty factor = ____). The sonographer increased the depth of view. The pulse duration then Select an answer decreased did not change increased , and the duty factor(did not change/increase/decrease)