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, $pitch=\dfrac{10}{0.25}=40\ s^{-1}$

Trial two, $pitch=\dfrac{11}{0.30}=36.67\ s^{-1}$

Trial three, $pitch=\dfrac{13}{0.31}=41.93\ s^{-1}$

Trial four, $pitch=\dfrac{12}{0.33}=36.36\ s^{-1}$

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.

6 0

4 years ago

A squirrel runs 40 feet up a tree; he's got a hungry dog after him. What is its displacement in feet?

mr_godi [17]

Displacement refers to an objects overall change in position, so the answer would be just 40 ft because that is how far the squirrel travelled.

Hope this helps!

5 0

3 years ago

After France fell to the Axis powers in 1940, what percentage of the country was placed under German control?

Alex73 [517]

I think the answer is either a or c

4 0

4 years ago

Read 2 more answers

Max discovered a beaker full of transparent liquid in the science lab. He hypothesized that since the liquid is transparent like

DiKsa [7]

the answer would be B

7 0

4 years ago