Planck's Constant Is H = 6

question 40

Multiple Choice

Planck's constant is h = 6.6 × 10^-34 Js. Light of wavelength 5 × 10^-7 m consists of photons whose energy is

• A) 1.1 × 10^-48 J.
• B) 1.3 × 10^-27 J.
• C) 4 × 10^-19 J.
• D) 1.7 × 10^-15 J.

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Definitions:

Freshwater

Bodies of water that have a low concentration of salt, such as lakes, rivers, and streams, crucial for the survival of many ecosystems.

Estuary

A highly productive ecosystem where nutrient-rich water from a river mixes with seawater.

Oxygen

A chemical element essential for most life forms on Earth, a component of the air and a key element in the respiratory processes of most living organisms.