Constants TPeriodic TatbTe A motion sensor can accurately measure the distance d to an object repeatedly via the sonar technique. (Older autofocusing cameras determine the distance by emitting a pulse of very high frequency (ultrasonic) sound that travels to the object being photographed, and include a sensor that detects the returning reflected sound, as shown in the figure.) (Figure 1) A short ultrasonic pulse is emitted and reflects from any objects it encounters, creating echo pulses upon their arrival back at the sensor. The sensor measures the time interval t between Part A The smallest time interval t that can be measured with high precision is 1.2 ms. What is the smallest distance (at 20 C) that can be measured with the motion sensor? Express your answer to two significant figures and include the appropriate units. HẢ ? the emission of the original pulse and the arrival of the first echo. dmin = Value Units Figure 1 of 1 Submit Request Answer Part B Autofocusing camera If the motion sensor makes 13 distance measurements every second (that is, it emits 13 sound pulses per second at evenly spaced time intervals), the measurement of t must be completed within the time interval between the emissions of successive pulses. What is the largest distance (at 20° C) that can be measured with the motion sensor? Express your answer to two significant figures and include the appropriate units. HÀ dmax = Value Units Pearson

Constants TPeriodic TatbTe A motion sensor can accurately measure the distance d to an object repeatedly via the sonar technique. (Older autofocusing cameras determine the distance by emitting a pulse of very high frequency (ultrasonic) sound that travels to the object being photographed, and include a sensor that detects the returning reflected sound, as shown in the figure.) (Figure 1) A short ultrasonic pulse is emitted and reflects from any objects it encounters, creating echo pulses upon their arrival back at the sensor. The sensor measures the time interval t between Part A The smallest time interval t that can be measured with high precision is 1.2 ms. What is the smallest distance (at 20 C) that can be measured with the motion sensor? Express your answer to two significant figures and include the appropriate units. HẢ ? the emission of the original pulse and the arrival of the first echo. dmin = Value Units Figure 1 of 1 Submit Request Answer Part B Autofocusing camera If the motion sensor makes 13 distance measurements every second (that is, it emits 13 sound pulses per second at evenly spaced time intervals), the measurement of t must be completed within the time interval between the emissions of successive pulses. What is the largest distance (at 20° C) that can be measured with the motion sensor? Express your answer to two significant figures and include the appropriate units. HÀ dmax = Value Units Pearson