Free-Electron Theory of Metals: the Fermi Energy of Rubidium at a Temperature

question 16

Multiple Choice

Free-electron theory of metals: The Fermi energy of rubidium at a temperature of 5 K is 1.85 eV. An electron state in rubidium is 0.007 eV above the Fermi level. What is the probability that this state is occupied at a temperature of 9K? (m_el = 9.11 × 10^-31 kg, h = 6.626 × 10^-34 J ∙ s, Boltzmann constant = 1.38 ∙ 10^-23 J/K, 1 eV = 1.60 × 10^-19 J)

• A) 1 × 10^-4
• B) 2 × 10^-5
• C) 5 × 10^-6
• D) 1 × 10^-6
• E) 2 × 10^-7

Comprehend the growth and development processes of bones.

Know the basic principles of bone and joint surgeries.

Distinguish between different movements and positions related to the human body.

Identify types of tissue and their roles within the skeletal system.

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Definitions:

Biological Deficits

Lack or imbalance in physiological factors that can affect an individual's health or cognitive functioning.

Gambling Disorder

A disorder, similar to substance abuse, characterized by the inability to resist the impulse to gamble.

Neurotransmitter Dopamine

A chemical messenger in the brain that plays a key role in motivation, pleasure, and reward, and is involved in motor control and other functions.

Pathological Gamblers

Individuals who are unable to resist the impulse to gamble, leading to significant personal, social, and financial problems.