Your lab group of three students are asked to make various measurements. For this graduated cylinder, the entire group agrees that
the bottom of the water is directly on the line. Partner 1 states "Since the
water is directly on the line, 21.7 mL is an acceptable measurement."
Partner 2 states, "I disagree, I believe 21.70 mL is a better measurement." It
is up to you to settle the dispute. Who, if either, is correct and why?

(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.)