In the Formula A(t) $\mathrm { A } ( \mathrm { t } ) = \mathrm { A } _ { 0 } \mathrm { e } ^ { k t }$

question 185

Multiple Choice

In the formula A(t) $\mathrm { A } ( \mathrm { t } ) = \mathrm { A } _ { 0 } \mathrm { e } ^ { k t }$ , A is the amount of radioactive material remaining from an initial amount $\mathrm{A}_{0}$ at a given time t, and k is a negative constant determined by the nature of the material. A certain radioactive isotope
Decays at a rate of 0.125% annually. Determine the half-life of this isotope, to the nearest year.

• A) 400 years
• B) 241 years
• C) 6 years
• D) 555 years

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Definitions:

Transgender

A term describing someone whose gender expression or identity differs from societal expectations based on their physical sex characteristics at birth.

Sexual Orientation

An individual's pattern of emotional, romantic, or sexual attraction to others, which can be towards the same sex (homosexuality), opposite sex (heterosexuality), both sexes (bisexuality), or neither (asexuality).

Bisexual

A sexual orientation where a person is sexually, emotionally, and/or romantically attracted to people of the same sex and people of another sex.

Asexual

A sexual orientation where a person does not experience sexual attraction but may experience emotional and/or romantic attraction.