Question

question 23: true or false: dimensional analysis can be used to derive new formulas.
a. true
b. false
question 24: true or false: unit conversions are unnecessary if the units are already consistent.
a. true
b. false
question 25: true or false: the process of dimensional analysis involves canceling identical units from the numerator and denominator.
a. true
b. false

Explanation:

• Question 23: Dimensional analysis helps in checking the correctness of equations and can also be used to derive new formulas by considering the dimensions of physical quantities.
• Question 24: If units are already consistent in a calculation or problem - solving context, there is no need for unit conversions.
• Question 25: In dimensional analysis, when dealing with ratios of physical - quantity expressions, identical units in the numerator and denominator can be canceled out.

Answer:

Question 23: a. True
Question 24: a. True
Question 25: a. True