- Two Piano Strings Are Supposed To Be Vibrating At 220 Hz But A Piano Tuner Hears Three Beats Every 3 1 S When They Are 1 (68.91 KiB) Viewed 54 times
Two piano strings are supposed to be vibrating at 220 Hz, but a piano tuner hears three beats every 3.1 s when they are played together. f2 219.0,221.0 Hz Submit ✓ Correct Term 1: Correct answer is shown. Your answer 218.0 Hz was either rounded differently or used a different number of significant figures than required for this part. Term 2: Correct answer is shown. Your answer 221.2 Hz was either rounded differently or used a different number of significant figures than required for this part. Important: If you use this answer in later parts, use the full unrounded value in your calculations. Part B Previous Answers By how much (in percent) must the tension be increased or decreased to bring them in tune? Express your answer using two significant figures. If there is more than one answer, enter them in ascending order separated by commas. IVE ΑΣΦ F1.8,-0.9 AFT Submit Previous Answers Request Answer ? %