Air pressure decreases at a rate of 2.5 pascals per kilometer in the eastward direction. in addition, the air pressure is increasing at a constant rate with respect to time everywhere. a ship sailing eastward at 8 km/hour past an island takes barometer readings and records a pressure drop of 30 pascals in 2 hours. estimate the time rate of change of air pressure on the island. (a pascal is a unit of air pressure.)

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

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An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?