Introduction to Physics

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26. The branch of physics that deals with the behavior of matter and energy at very small scales is called:
a) Quantum physics
b) Thermodynamics
c) Optics
d) Mechanics

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27. The minimum amount of energy that can be gained or lost by an atom is called a:
a) Quark
b) Photon
c) Neutrino
d) Quantum

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28. The SI unit of frequency is the:
a) Newton
b) Joule
c) Hertz
d) Watt

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29. The force that holds the nucleus of an atom together is called:
a) Gravitational force
b) Electromagnetic force
c) Strong nuclear force
d) Weak nuclear force

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30. The process of a nucleus splitting into two smaller nuclei is called:
a) Fusion
b) Fission
c) Decay
d) Diffusion

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