If the Location of a Particular Electron Can Be Measured

question 45

Multiple Choice

If the location of a particular electron can be measured only to a precision of​ 0.069 nm,what is the minimum uncertainty in the electron's velocity?
(m_e=9.109×10^-31 kg,c=3.00×10⁸ m/s,h=6.63×10^-34 J·s)

• A)​8.4×10⁵ m/s
• B)​​2.2×10⁵ m/s
• C)​​8.4×10^-4 m/s
• D)1​​×10^-6 m/s
• E)​​1.7×10^-13 m/s

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Definitions:

Keratinocytes

The main type of cell found in the epidermis, responsible for the formation of keratin, a protein that gives skin its strength and flexibility.

Fibrous Protein

Proteins that are elongated and insoluble, providing structural support and tensile strength to tissues, such as collagen and keratin.

UV Rays

Short for ultraviolet rays, a type of electromagnetic radiation from the sun that can cause skin damage and cancer.

Melanocytes

Cells located in the skin that produce melanin, the pigment responsible for skin color and protection against UV radiation.