Which of the following is true?
1.Dimensional analysis can never give you the numerical value of constants of proportionality that may appear in an algebraic expression, but it can sometimes give the proper mathematical forms for the variables (such as whether they are squared, multiplied by each other, divided by each other, added together, or subtracted from each other).
2.Dimensional analysis can sometimes give you the numerical value of constants of proportionality that may appear in an algebraic expression, and it can sometimes give the proper mathematical forms for the variables (such as whether they are squared, multiplied by each other, divided by each other, added together, or subtracted from each other).
3.Dimensional analysis can never give you the numerical value of constants of proportionality that may appear in an algebraic expression and it can never give the proper mathematical forms for the variables.
4.Dimensional analysis can sometimes give you the numerical value of constants of proportionality that may appear in an algebraic expression, but it can never give the proper mathematical forms for the variables (such as whether they are squared, multiplied by each other, divided by each other, added together, or subtracted from each other).
Question 2
In a machine shop, two cams are produced, one of aluminum and the other of cast iron. Both cams have the same mass. Which cam is larger?
1.both cams have the same size
2.cannot tell from the information given
3.the aluminum cam
4.the iron cam
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