The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. What will be the initial decay rate, at t = 0 (in decays/s)?
a. 1.09 × 10^14
b. 1.8 × 10^?9
c. 5.6 × 10^8
d. 3.6 × 10^18
e. 3.6 × 10^17
d
You might also like to view...
If you see a bright "star" in the sky, how could you tell whether it is a star or a planet?
A. Look at it several days later-if it's a planet, it will move across the background stars. B. Planets are round; stars have five points. C. Planets are too dim to be seen without a telescope. D. Planets always appear right next to the Moon.
Nearly every aspect of astronomy is related in some way to the existence of gravity and to the motions which are responsible for a balance against gravity. How does this balance play a role for the miscellaneous objects of the solar system (i.e
, the asteroids and comets)? How can some aspect of this be used as a tool to determine masses in the solar system?
The three major types of seawater movement are ______________, currents, and tides
Fill in the blank(s) with correct word
A system's "entropy" is
A) the amount of work the system can do. B) the amount of thermal energy in the system. C) the amount of force the system could exert. D) the amount of microscopic disorganization in the system. E) the amount of microscopic work the system can do.