We now have
Q = Q 0 e−0.00043t. (2)
When one quarter of Q 0 has decayed, three quarters of the initial amount
remains. We use this fact in equation (2) to find t:
We now have
Q = Q 0 e−0.00043t. (2)
When one quarter of Q 0 has decayed, three quarters of the initial amount
remains. We use this fact in equation (2) to find t: