Answer:
Four; Two; One; Three
Explanation:
During a lab, a student tapes a ruler to a lab table and sets the ruler in motion. A laser detector pointed at the ruler records how many times the ruler vibrates back and forth in a period of time.
Pitch or frequency is defined as the number of cycles per unit time. We can calculate the pitch for each trials i.e.
Trial one, [tex]pitch=\dfrac{10}{0.25}=40\ s^{-1}[/tex]
Trial two, [tex]pitch=\dfrac{11}{0.30}=36.67\ s^{-1}[/tex]
Trial three, [tex]pitch=\dfrac{13}{0.31}=41.93\ s^{-1}[/tex]
Trial four, [tex]pitch=\dfrac{12}{0.33}=36.36\ s^{-1}[/tex]
Hence, the order of the trials from least to greatest pitch is :
Trial four, Trial two, Trial one and Trial three i.e. option (d) is correct.
