Student Name: Date: Lab-9: Ultrasonic Sensor Pre-Lab Assignment (to be done before beginning the lab exercise) All information is available in the files included in Lab#.zip file in Blackboard unless otherwise noted. General question: Q1: What does ultra-sonic mean? (Hint: What are the meanings of words 'Ultra' and 'Sonic' ?) A1: Read Reference > SRF04 Technical Specs.pdf > Page 1,2 Q2: SRF04 sends out an 8-cycle burst of ultrasonic sound wave at what frequency (in kHz)? A2: Q3: What is the pulse width of Trigger Pulse that is sent from Arduino to Ultrasonic sensor module? A3: Q4: What is the range of pulse width of Echo Pulse that is sent from Ultrasonic sensor to Arduino? A4: Q5: The ultrasonic sensor sends its measurement to Arduino via the Echo Pulse. A5: What quantity is the sensor measuring, Time or Distance? Read Reference > Arduino Reference - constrain.pdf Q6: Write the Example line of code that shows how to use constrain() function. A6: Describe in one sentence, what this Example line of code does?