The Excited State of a Certain Atom Is $10 ^ { - 19 } \mathrm {~J}$

question 3

Short Answer

The excited state of a certain atom is $3.2 \mathrm { eV } \pm 0.21 \mathrm { eV } . \left( h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } , 1 \mathrm { eV } = 1.60 \times \right.$ $10 ^ { - 19 } \mathrm {~J}$ )
(a) What is the average lifetime of this state, in femtoseconds?
(b) If the excited energy were doubled (to $6.4 \mathrm { eV } \pm 0.21 \mathrm { eV }$ ), how would the lifetime be affected?

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Definitions:

Units Started

The number of units of a product that have begun the production process within a specific period.

Cost Per Equivalent Unit

This measures the total cost of producing one unit of goods, considering both direct and indirect costs, and is used in processes where goods are indistinguishable from each other.

Work In Process Inventory

The value of partially completed goods which are still in the production process at a particular point in time.

Equivalent Units

A measurement used in process costing that converts partial work on units into a number of fully completed units.