Wave properties - Study guides, Class notes & Summaries

Waves are classified according to whether or not they need a medium in which to propagate. A wave which needs a medium is called a(n) ______________________ wave, a wave which will propagate in a vacuum (the absence of a medium) is called a(n) ________________ wave correct answer: mechanical, electromagnetic What are the two classifications of mechanical waves? correct answer: Transverse and longitudinal Frequency has the units of: (select all that apply) A. Cycles/second B. Hz C. Her...

Med Surg II Exam 1 Questions and Answers Latest Updated Version. FOCUS POINTS EXAM 1 CARDIAC (MED SURG II EXAM 1) Dysrhythmias Abnormal heart rate or rhythm Caused by a disturbance in electrical conduction of the heart, not by abnormal heart structure May be benign or have lethal consequences Cardiac output = stroke volume x HR Patho ● 5 unique properties of cardiac cells ○ Automaticity → spontaneously initiate an electrical impulse ■ Changes in automaticity cause tachydysrhyth...

Praxis 5435 Latest Update 100% Correct absorption this occurs when waves pass through objects. The amplitude of a wave decreases as it passes through a medium acceleration the rate at which the velocity of an object changes over time. This will change if speed, direction, or both change. accuracy how close the measured values are to the true or actual value alkanes a type of hydrocarbon in which all carbon-carbon bonds are single bonds alkenes have at least one carbon-carbon dou...

Sound waves are: - longitudinal, mechanical The speed of sound in soft tissue is closest to: - 1,500 m/s The frequency closest to the lower limit of ultrasound is: - 15,000 Hz Which is not an acoustic variable? - intensity The effects of soft tissue on ultrasound are called: - acoustic propagation properties All of the following are true EXCEPT: - two waves with identical frequencies must interfere constructively Put in decreasing order: deci, deca, micro, centi - deca, deci, c...

AQA A Level PHYSICS (7408/3BD) Paper 3 Section B Turning points in physics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] In Figure 1, a beam of electrons travels through the aperture in the anode and hits the screen. Figure 1 0 1 . 1 Explain how the electrons that form the beam are emitted. [1 mark] 0 1 . 2 Show that the maximum speed of the electrons in the beam is about 1.3 × 107 m s −1 . [1 mark] Do Do not not write outside the box 3 0 1 . 3 A student suggests...

Praxis 5442 Middle School Science Latest Update Already Passed 1 calorie = ____ joules 4.184 joules A mole of gas the number of molecules in the gas expressed in terms of Avogadro's number acid compound that forms hydrogen ions (H+) in solution alkali metals (group 1) characteristics soft, most reactive metals, easily give away valence electrons, 1 valence electron Amperes the unit for measuring electrical current; the abbreviation is amp. Amplitude Height of a wave angul...

electrical properties of the heart - Answer-1-automaticity 2-excitability 3-conductivity 4-contractility automaticity - Answer-=the ability of cardiac cells to depolarize spontaneously w/o external stimuli -cells able to modify membrane to pull in Na+ while K+ exits -rapid depolarization when threshold potential is reached -only certain cells have property of automaticity: SA node, AV node, bundle of HIS, purkinje network influence of the nervous system - Answer-SYMPATHETIC: affects ...

SONOGRAPHY CANADA PHYSICS CORE EXAM . what is media/medium - ANSWER biological tissue what do all waves carry from one location to another - ANSWER energy sound is a ____________ wave in which particles in the medium move - ANSWER mechanical where can sound not travel - ANSWER in a vacuum are sound waves transverse or longitudinal waves - ANSWER longitudinal the effects of the medium upon the sound wave - ANSWER acoustic propagation properties what are used to distinguish between sound w...

Med Surg II Exam 1 Questions and Answers Latest Updated Version. FOCUS POINTS EXAM 1 CARDIAC (MED SURG II EXAM 1) Dysrhythmias Abnormal heart rate or rhythm Caused by a disturbance in electrical conduction of the heart, not by abnormal heart structure May be benign or have lethal consequences Cardiac output = stroke volume x HR Patho ● 5 unique properties of cardiac cells ○ Automaticity → spontaneously initiate an electrical impulse ■ Changes in automaticity cause tachydysrhyth...

2023 AQA A Level PHYSICS (7408/3BD) Paper 3 Section B Turning points in physics Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] In Figure 1, a beam of electrons travels through the aperture in the anode and hits the screen. Figure 1 0 1 . 1 Explain how the electrons that form the beam are emitted. [1 mark] 0 1 . 2 Show that the maximum speed of the electrons in the beam is about 1.3 × 107 m s −1 . [1 mark] Do Do not not write outside the box 3 0 1 . 3 A student su...