Aroast turkey is taken from an oven when its temperature has reached 185°f and is placed on a table in a room where the temperature is 75°f. the graph shows how the temperature of the turkey decreases and eventually approaches room temperature. by measuring the slope of the tangent, estimate the rate of change of the temperature after an hour.

The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz