Question

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.

What is the order of trials from least to greatest pitch?

One; Two; Three; Four
One; Two; Four; Three
Three; One; Two; Four
Four; Two; One; Three

Answer 1

Four; Two; One; Three

Step-by-step explanation:

Answer 2

Four; Two; One; Three

Step-by-step 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,
`pitch=(10)/(0.25)=40\ s^(-1)`

Trial two,
`pitch=(11)/(0.30)=36.67\ s^(-1)`

Trial three,
`pitch=(13)/(0.31)=41.93\ s^(-1)`

Trial four,
`pitch=(12)/(0.33)=36.36\ s^(-1)`

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.