Radiation Activity: Fermium-253 has a half-life of 3.00 days. A sample of fermium has 3.88 × 106 nuclei. What is the initial activity of this sample?
A. 10.4 Bq
B. 10.4 kBq
C. 12.9 Bq
D. 12.9 kBq
Answer: A
You might also like to view...
A starburst galaxy is a galaxy that:
A) is undergoing a rapid surge of white dwarf explosions. B) is undergoing a rapid surge of star formation. C) has never interacted with another galaxy. D) is undergoing a rapid burst of supernovae explosions.
Heavy atoms are not appreciably larger in size than light atoms because the nuclei of heavy atoms have more
A) mass. B) electric charge. C) nucleons. D) all of the above E) none of the above
An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus?
(k = 1/4??0 = 8.99 × 109 N ? m2/C2, e = 1.60 × 10-19 C) A) 5.4 × 10-8 N/C B) 5.6 × 10-8 N/C C) 5.8 × 10-8 N/C D) 6.0 × 10-8 N/C E) 6.2 × 10-8 N/C
A steel plate has a hole drilled through it. The plate is put into a furnace and heated. What happens to the size of the inside diameter of a hole as its temperature increases?
a. increases c. remains constant b. decreases d. becomes elliptical