A Metal Having a Work Function of 2

question 2

Multiple Choice

A metal having a work function of 2.8 eV is illuminated with monochromatic light whose photon energy is 3.9 eV.What is the threshold frequency for photoelectron production? ,1 eV = 1.60 × 10^-19 J)

• A) 6.8 × 10¹⁴ Hz
• B) 2.7 × 10¹⁴ Hz
• C) 7.6 × 10¹⁴ Hz
• D) 8.5 × 10¹⁴ Hz
• E) 9.4 × 10¹⁴ Hz

Identify normal and abnormal age-related changes and interventions to support aging individuals.

Understand the concept and services of assisted living facilities versus other living options for older adults.

Assess and address mobility and activity concerns in older adults to maintain independence.

Design and deliver educational content on health promotion, prevention of common chronic conditions, and strategies to maintain independence in older age.

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Definitions:

Species Diversity

The variety and abundance of different species within a given ecosystem, essential for maintaining ecosystem health and resilience.

Terrestrial Ecosystems

Ecosystems found on land, characterized by distinct biotic (living) and abiotic (non-living) components, interacting in a specific area.

Biodiversity

The assortment of all living organisms across different habitats, from terrestrial to aquatic environments, emphasizing the importance of ecological balance.

Successional Species

Successional species are plants and animals that colonize an ecosystem following a disturbance, playing a crucial role in ecological succession towards a stable climax community.