D Question 13 1 pts String is wrapped around the outer rim of a solid uniform cylinder that is free to rotate about a frictionless axle through its center. When the string is pulled with a force P tangent to the rim, it gives the cylinder an angular acceleration a. If the cylinder had fourfold the radius, but everything else was the same, the angular acceleration would be 40 O a/16 16a O a/4 D Question 14 1 pts Suppose a train sounding its horn is moving at 30.0 m/s in still air on a day when the speed of sound is 350 m/s. As the train passes the platform, on which you stand (moving away from you), you hear it with a frequency of 180 Hz. Which frequency does an observer on the train hear? 197 Hz O 17 Hz 165 Hz 195 Hz II app.honorlock.com is sharing your screen. Stop sharing Hide OJ Webcam MacBook Air 14 DII FO 20 F3 888 F5 F6 F7 F8 $ & 5 7 8 9