A Measurement of an Electron's Speed Is 2

question 3

Multiple Choice

A measurement of an electron's speed is 2.0 × 10⁶ m/s and has an uncertainty of 10%.What is the minimum uncertainty in its position? (h = 6.626 × 10^-34 J ∙ s,m_el = 9.11 × 10^-31 kg)

• A)0.91 nm
• B)1.8 nm
• C)2.7 nm
• D)2.8 nm
• E)5.0 nm

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Definitions:

Phagocytosis

Phagocytosis is a cellular process wherein cells engulf and digest large particles or microorganisms, playing a key role in the immune response.

Immunological Memory

The ability of the immune system to remember antigens after contact with them, allowing more rapid response if it encounters the same antigens again. Memory B cells and memory T cells are responsible for immunological memory.

Natural Killer Cells

A type of lymphocyte important in the body's innate immune system, responsible for the early defense against both tumor cells and various infections.

Altered Self-Cells

Cells that have undergone genetic or structural changes, distinguishing them from their original state, often related to diseases like cancer.