____________________ ____ 17. When a listener moves toward the source of a sound wave, the compressions of the wave are spread out. ____________________ ____ 18. The frequency at which a string vibrates is its standing wave. ____________________ ____ 19.
A phrase of a waveform is the point where the wave is in its cycle. 2. What happens when two identical waves are in-phase? When two identical waves are in-phrase they build on one another, making higher amplitude. 3.
Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
The coil is the part of the machine that will actually make it work, by giving of a radio frequency. The scanner uses hydrogen atoms to tell the difference between different tissues. MRI scanners will use ‘spin’ which is a property in the machine which can tell the differences between tissues, such as fat, tendons, and muscle. Once the MRI scanner is turned on and the patient is in ready to be scanned the nuclei of the hydrogen atoms in the machine can spin in one of two different directions. The hydrogen atom nuclei can change the direction of spin to the opposite direction.
They are Amplitude modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM). These methods are based on altering one of the carrier’s characteristics: amplitude, frequency, or phase. In AM, FM and PM modulations each carrier changes in accordance with the information signal’s amplitude variations. When it comes to advantages and disadvantages there are performance factors to consider. They are spectral efficiency which identifies a communication system’s ability to achieve a given data rate within a given bandwidth.
Frequency Hopping Spread Spectrum (FHSS) * What is it? How does it work? What issues are addressed? Why is it important? FHSS is when a signal is transmitted across several channels.
Fill refraction cell with water. 4. Direct laser pointer at Refraction cell so that the light from the laser pointer enters the refraction cell at the reference line. 5. Place a dot on the piece of paper at the point where the laser light originates from the pointer and where it leaves the refraction cell after passing through the water.
Liam Stephenson controlled assessment Introduction In my course work I will be looking at how the thickness of a converging lens affects the focal length. The factors involved in this experiment are: light, lens curvature, refraction and thickness of the lens, these will determine the focal length; the focal length is the length between the focus and the lens. Light-visible light is an electromagnetic wave in the electromagnetic spectrum The speed of light depending on the medium it is in, for example the speed of light is 300,000 km/s however when light travels through other medium such as water or glass the speed of light is slowed this is because water and glass is denser than a vacuum of air. Due to it being more dense and a change in speed, the direction of the wave will change this is
To achieve this data we have a tube filled with water connected to a pressure sensor that doubles up as a transducer converting the pressure change as an electrical signal, which via software is being graphed. The other end of the catheter is connected to a funnel with a balloon atop and this funnel is junctioned using a 3-way stopcock. The tube is filled with water end to end, the balloon attached on the funnel is blown up which in turn puts pressure on the water which puts pressure on the pressure sensor, that transudes the pressure difference in to an electrical signal and LabView software displays that signal as a graph. Documenting and analyzing the step input when the balloon is popped is the purpose of this lab. Introduction The purpose of this lab is to build a catheter system, with an inflated balloon applying pressure to the catheter being recorded by the computer and being graphed.
Add hydrochloric acid to a test tube. Cut a piece of magnesium ribbon (couple of centimeters). Record the physical properties of both substances. 2. Write a hypothesis on what you think will happen when mixed.