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AAMC MCAT Official Prep Free Sample Test Questions and Answers
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AAMC MCAT Official Prep Free Sample Test Questions and Answers
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AAMC MCAT Official Prep Free SampleTest Questions and Answers
When the level of liquid inside a buret is higher than outside,
what does that mean for the gas pressure inside the buret? -
Correct Answer ✅It is lower thab outside
An ultrasound examination could show the motion of a fetus.
In order to image this motion, the ultrasound examination
devices requires what minimal information?
A.The speeds of the sound and of the moving object.
B.The speed of the sound, and the frequencies of the sound
waves emitted and observed.
C.The speeds of the sound and of the moving object, and the
frequencies of the sound waves emitted and observed.
D.The speeds of the sound and of the moving object, and the
frequencies and wavelengths of the sound waves emitted and
observed. - Correct Answer ✅B. The Doppler effect in
ultrasound waves is used to provide fetal images. The
Doppler effect relates the frequency of the ultrasound wave
as detected by a moving detector to the frequency of the
wave when the source is stationary, the speed of the source,
and the speed of the detector.
, AAMC MCAT Official Prep Free Sample
Test Questions and Answers
Doppler effect equation - Correct Answer ✅f' = f (Vw)/(Vw-
Vs)
where V = speed of sound in the medium
Vd = speed of the detector
Vs = speed of the source
Top sign: toward (if source or detector is moving toward
other)
Bottom sign: away (if they moving away from other object)
*Treat numerator and denominator separately when deciding
if top or bottom sign
Relationship between temperature and resistance - Correct
Answer ✅Directly proportional
IR peaks - Correct Answer ✅--Carboxylic Acid: OH (~3000);
C=O (~1700); C-O (~1200)
-- Alcohol: OH (~3000); C-O (~1200)
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