¿Cuál es el volumen de un cubo de acero si se sabe que su masa es 50 hg, si la densidad del acero es 7850 kg/m3? Exprese el resu
1 answer:
You might be interested in
Answer:
The correct answer is "22.27 hours".
Explanation:
Given that:
Radioactive isotope activity,
= 490,000 Bq
Activity,
= 110,000 Bq
Time,
= 48 hours
As we know,
⇒
or,
⇒
By taking "ln", we get
⇒
By substituting the values, we get
⇒
⇒
As,
⇒
then,
⇒
⇒