Destructive waves - Study guides, Class notes & Summaries

Physics 1B CBEamplitude - correct answer the distance from the midpoint to the crest (or trough) of a wave; equals the maximum displacement from equilibrium antinodes - correct answer the positions on a standing wave with the largest amplitudes; occur halfway between nodes blue shift - correct answer an increase in frequency toward the high-frequency, or blue, end of the color spectrum bow wave - correct answer the V-shaped wave produced by an object moving on a liquid surface faster th...

CEM 141 PASSED Exam Questions and CORRECT Answers Evidence that light is a wave - Ans Light is a wave because when light goes through 2 slits a diffraction pattern occurs. Reasoning that light is a wave - Ans the waves from each slit meet "in phase" or "out of phase" when the waves meet in phase constructive interference occurs and the wave intensity increases. this is seen by bright spots in the patterns. when the waves meet out of phase destructive interference occurs and the w...

mole - 6.022 x 10^23 things number of particles that allows us to convert from the molecular to the macroscopic level limiting reactant/reagent - amount of one of the reactants which limits how much product can be formed. smallest amount. percent yield - actual/theoretical x 100 electromagnetic radiation - wavelength - The distance between two corresponding parts of a wave. seconds/wave. 1/frequency. measured in m amplitude - Height of a wave frequency - waves/second. 1/wavelength. mea...

- greatest contributor to attenuation in tissues - Potential source of bio-effects (discussed later) acoustic speckle - noise resulting from the constructive and destructive interference of small sound wavelets -grainy appearance Amplitude - -For a wave or vibration, the maximum displacement on either side of the equilibrium (baseline) position. - positive amplitudes (above baseline) and negative amplitudes (below baseline) -units that are appropriate to the acoustic variable considered ...

PHYSICS - VIBRATION AND WAVES EXAMINATION TEST BANK QUESTIONS WITH CORRECT DETAILED ANSWERS GRADED A+ what causes interference patterns? - Answer-when waves from diff sources arrive at the same point and time. Increase, decrease and neutralized how does a standing wave occur? - Answer-by shaking something just right; original and reflective waves Is it possible for one wave to cancel another wave so that the combined amplitude is zero? - Answer-yes. complete destructive interference a...

The valve between the right atrium and right ventricle is named because it has _____. - answers-three cusps A small patch of tissue called the _____ acts as the pacemaker of the heart. - answers-sinoatrial node _____ samples the blood in each heart chamber for oxygen content and pressure. - answers-cardiac catheterization The simplest form of atherosclerosis is _____, which are thin, flat discolorations in the arteries that can enlarge and become thicker as they grow in length. - answer...

50. What is the range of periods commonly found in waves produced by ultrasound systems? A. 0.001 to 1s B. 0.06 to 0.5 us C. 0.2 to 1 ms D. 10 to 100 ns - ANSWER-B. Ultrasonic imaging waves have a period in ps. The period is the range of 0.06 to 0.5 the time of a single cycle. Period is the loolto reciprocal of frequency. A wave with a frequency of 2 MHz has a period of 0.5 usec. A wave with a frequency of 15 MHz has a period of 0.06 us. 51. With standard ultrasonic imaging, what happ...

Sound waves are: a) electric b) mechanical, transverse c) spectral d) longitudinal, mechanical correct answers D The speed of sound of ultrasound in soft tissue is closest to: a) 1,540 km/sec b) 1.54 km/sec c) 1,500 m/s d) 1,540 mm/sec correct answers C Which is not an acoustic variable? a) density b) pressure c) distance d) intensity correct answers D The effects of soft tissue on ultrasound are called: a) acoustic proliferation properties b) dynamic effects ...

SPI Comprehensive Mock Exam Questions with all the correct answers Updated 2024 Sound waves are: A. Electric B. Mechanical, transverse C. Spectral D. Longitudinal, mechanical Longitudinal, mechanical The speed of US in soft tissue is closest to: A. 1.540 km/sec B. 1.54 km/section C. 1,500 m/s D. 1,540 mm/sec 1,500 m/s The frequency closest to the lower limit of US is: A. 19,000 kHz B. 10,000 MHz C. 20,000 msec D. 15,000 Hz 15,000 Hz Which is NOT an acoustic variable? A. Den...

sp Hybridization - ️️2 SP + 2 π orbital Linear geometry at carbon sp² Hybridization - ️️3 SP + 1 π orbital Trigonal planar geometry at carbon sp³ Hybridization - ️️4 SP orbitals Tetrahedral geometry Antibonding MOs - ️️Destructive interference waves created by high energy electrons in MO models (Node is always present in antibonds) Bonding MOs - ️️Constructive interference waves created by lower energy electrons in MO models (No nodes, but beware of node-li...