Waves with a high frequency have a shorter wavelength, so how would you describe the pitch that you hear?
low
high
the same as when waves are spaced far apart

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.