The activity of k 40 in a 70 kg human body is estimated to be 120 nci what is this activity in becquerels

The activity of a sample is determined in terms of the number of nuclear disintegrations in a second. The Curie or Ci is a common unit for activity measurement. Bq or Becquerel refers to the SI unit for radiation activity measurement.

The activity of K-40 in 70 kg human body is 120 nCi

The relationship between Curie and Becquerel are as follows:

1Ci = 3.7 * 10¹⁰ Bq

1nCi = 37 Bq

Thus, 120 nCi * 37 Bq / 1nCi = 4.4 * 10³ Bq.

Hence, the activity of K-40 in a 70 Kg human body is 4.4 * 10³ Bq.