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ultrasound physics

chapters 1 and 2

What is required for the answer to a numerical question to be comprehensive? units
When a sonographer changes the transducer, the system is now changed or altered (t/f) true
The X axis on a graph runs up and down or vertical. (t/f) false
How are your exam scores related to your study time? directly related/ proportional
Which of the following is a unit of volume? A) feet squared B) yards C) cubic inches D) millimeters E) centimeters c. cubic inches
Given that there are 2.54 cm (centimeters) in one inch. You measure the length of the right kidney and it measures 12.7 cm (centimetrs) How long is the right kidney in inches? 5 inches
Which one of the following statements is correct? A) there are 10 centimeters in one meter B) .001 second in the same as one nano second C) there are 1000 milliliters in one liter D) there are 100 milliseconds in one second c. There are 1000 milliliters in one liter
In the metric system, Which one of the following prefixes matches the correct symbol? A) Megs = m B) milli = n C) deca = d D) centi = c d. centi= c
Which of the following correctly represents distance and time? A) inches per mile B) meters per second C) feet per yard D) milliliters per liter b. meters per second
Which of the following is correct? A) billionth = .0000001 B) millionth = .000001 C) kilo = 10.000 D) billion = 1,000,000 E) milli = .01 b. millionth = .000001
You perform a Doppler study on a heart valve and find the velocity through the aortic valve is 4 m/sec (meters per second). The physician requests the velocity meas in cm/sec (centimeters per second). What velocity meas would you give to the phys? cm/sec 400 cm/sec
What is the reciprocol of a billion? 0.000000001
How many centimeters are there in 30 millimeters? 3
What are acoustic variables? Pressure (pascals), density (kg/cm3), and distance (cm,mm). Define a sound wave.
Differentiate between a longitudinal wave and a transverse wave. longitudinal wave- particles move in the same direction that the wave propagates. transverse-particles move perpendicular to the direction that the wave propagates.
constructive interference the interference of a pair of in-phase waves that results in the formation of a single wave with greater amplitude then either of its components
destructive interference the interference of a pair of out-of-phase waves that results in the formation of a single wave with less amplitude then either of its components.
Created by: AshleyLemieux
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