Question

A certain Isotope decays radioactively so that the mass satisfies the equation m' = -0.04m. Here the time is measured in days Why is there a negative sign? A. mass is constant B. mass is increasing C. mass is decreasing D. none of the above

Answer 1

The negative sign in the equation m' = -0.04m indicates that the mass is decreasing in radioactive decay.

Step-by-step explanation:

The negative sign in the equation m' = -0.04m indicates that the mass is decreasing. In radioactive decay, the mass of the isotope decreases over time as it undergoes decay.