Bohr Atom: a Hydrogen Atom Makes a Downward Transition from the

question 50

Multiple Choice

Bohr atom: A hydrogen atom makes a downward transition from the state to the n = 5 state. Find the wavelength of the emitted photon. The lowest level energy state of hydrogen is -13.6 eV. (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J, c = 3.00 × 10⁸ m/s)

• A) 2.43 μm
• B) 1.46 μm
• C) 1.94 μm
• D) 2.92 μm

Identify key events and their impact on the labor movement in the United States.

Distinguish between different types of labor unions (craft, industrial, uplift, etc.).

Comprehend the evolution of labor rights and conditions from the early years of US history.

Analyze the role of labor unions in addressing workers' rights and social justice.

---

Definitions:

Natural Selection

The process by which biological traits become either more or less common in a population due to the effect on the survival and reproduction of organisms.

Evolutionary Process

The natural development and adaptation of organisms over time through mechanisms like natural selection and genetic drift.

Common Ancestors

Refers to an ancestor that two or more descendants or species have in common from their family tree or evolutionary path.

Harmonious Ecosystem

An ecological state wherein different species and elements of an environment interact in a balanced and beneficial manner, supporting sustainability.