The "Seeing" Ability or Resolution of Radiation Is Determined by Its

question 82

Multiple Choice

The "seeing" ability or resolution of radiation is determined by its wavelength.If the size of an atom is approximately 1.3 × 10−¹⁰ m,how fast must an electron travel to have a wavelength smaller than that of an atom? (m_e = 9.11 × 10−³¹ kg and h = 6.63 × 10−³⁴ J⋅s)

• A)5.6E+6 m/s
• B)5.1E+7 m/s
• C)8.4E+5 m/s
• D)9.5E+6 m/s
• E)​2.4E+3 m/s

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Definitions:

Autonomic

Relating to the autonomic nervous system, which controls involuntary body functions such as heartbeat and digestion.

Parasympathetic

The branch of the autonomic nervous system responsible for regulating the body's rest and digest functions, opposing the sympathetic system.

Sympathetic

Part of the autonomic nervous system responsible for the body's "fight or flight" response to stress.

Parasympathetic

Relating to the part of the autonomic nervous system that conserves energy by slowing down the heart rate and increasing intestinal and gland activity.