Electrons in a Certain Laser Make Transitions from a Metastable

question 20

Multiple Choice

Electrons in a certain laser make transitions from a metastable state to the ground state.Initially there are 6*10²⁰ atoms in the metastable state and 2 * 10²⁰ atoms in the ground state.The number of photons that can be produced in a single burst is about:

• A)2 * 10²⁰
• B)3 *10²⁰
• C)4 * 10²⁰
• D)6 *10²⁰
• E)8 * 10²⁰

Identify physical and psychological characteristics influenced by genetic makeup (phenotype).

Identify and understand the stages of cognitive development as conceptualized by Jean Piaget.

Recognize patterns of physical growth and developmental milestones in children.

Understand the influence of puberty on physical growth and how it affects height.

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