The Excited State of a Certain Atom Is 3

question 50

Essay

The excited state of a certain atom is 3.2 eV ± 0.21 eV.( h = 1.055 × 10^-34 J • s = ,1 eV = 1.60 × 10^-19 J)
(a)What is the average lifetime of this state?
(b)If the excited energy were doubled to 6.4 eV ± 0.21 eV,how would the lifetime be affected?

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Definitions:

Yield To Maturity

The total anticipated return on a bond if the bond is held until the date it matures, assuming all payments are made as scheduled.

Yield To Maturity

The expected total yield on a bond when held until the expiration of its term.

Coupon Rate

The yearly rate of return on a bond, shown as a percentage of its nominal worth.

Discount Rate

The interest rate that the Federal Reserve charges banks for short-term loans, or a rate used to discount future cash flows to present value.