Astudent heats a liquid on a burner. what happens to the portion of liquid that first begins to warm? what all applys
it becomes more dense.
it becomes less dense.
it releases energy to the environment.
it absorbs energy from the environment.
it rises upward.
it sinks downward.

(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.)