1) Why do you think MRI machines are designed for the pulse frequency to enter in resonance specifically with Hydrogen atoms? What other elements could theoretically work other than Hydrogen?
1) Why do you think MRI machines are designed for the pulse frequency to enter in resonance specifically with Hydrogen atoms? What other elements could theoretically work other than Hydrogen?
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Question 1
Transcribed Image Text:1) Why do you think MRI machines are designed for the pulse frequency to enter in resonance specifically with
Hydrogen atoms? What other elements could theoretically work other than Hydrogen?
2) Gasoline-Electric hybrid vehicles like the Toyota Prius, have both electric and gasoline motors. How is the
battery of the car charged if the car does not have a charging port? Hint: one component serves a dual purpose.
3) As discussed in class some birds and microorganisms have a "magnetic" spatial sense. This means there are
traces of certain elements on some parts
their nervous systems. Which of these elements could be? Which is
the most likely one?
4) The instruments that measure rotational speed (RPM's)
of a machine like cars are called Tachometers, and can
Squaring Circuit
Photo Sensor
be constructed with magnetic sensors or light sensors
Disk
that measure a number of revolutions per minute. Is
LED
one approach better than the other? Comment on the
advantages of optical vs magnetic rotational sensors
Magnet
Rotating Shaft
Magnetic Sensor
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