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 of 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 tc be constructed with magnetic sensors or light sensors Squaring Circuit Photo Sensor Disk that measure a number of revolutions per minute. Is one approach better than the other? Comment on the advantages of optical vs magnetic rotational sensors LED Magnet Rotating Shaft

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Q: 22) Two sources emit waves that are in phase with each other. What is the longest wavelength that…

A: Distances from the source l1 = 161 m l2 = 295 m

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A:

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A: Given, i. Resultant is given by,

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A:

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A:

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Nuclear Fusion

Nuclear fusion is a type of nuclear reaction. In nuclear fusion, two or more than two lighter atomic nuclei combine to form a heavier nucleus. During this process, an enormous amount of energy is released. This energy is called nuclear energy. Nuclear fusion is the energy source of the sun and stars.

Fusion Bomb

A fusion bomb is also known as a thermonuclear bomb or hydrogen bomb which releases a large amount of explosive energy during a nuclear chain reaction when the lighter nuclei in it, combine to form heavier nuclei, and a large amount of radiation is released. It is an uncontrolled, self-sustaining nuclear chain reaction where isotopes of hydrogen combine under very high temperature to form helium. They work on the principle of operation of atomic fusion. The isotopes of Hydrogen are deuterium and tritium, where they combine their masses and have greater mass than the product nuclei, get heated at high temperatures, and releases energy.