The graph below shows the percentage of unstable nuclei remaining of a radioactive isotope. Initially, there was 44g of the radioactive substance. How much of the substance is thereafter 60 minutes?

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this

Name three populations commonly found in a prairie system