
1a. A superbike is travelling at 303 km/h while you're watching a race. If the sound...
(a) What frequency is received by a person watching an oncoming ambulance moving at 130 km/h and emitting a steady 773 Hz sound from its siren? The speed of sound on this day is 345 m/s. Hz (b) What frequency does she receive after the ambulance has passed? Hz
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
7) In a bicycle race, a biker was riding at 60 km/h alone. She wanted to reduce the drag coefficient by drafting behind her teammate to enjoy a reduced drag, thus saving energy. If she uses the same effort that is the same power (Power = F x V), how fast did she go by drafting? a 68.2 km/h b. 72.4 km/h 79.6 km/h d. 82.5 km/h 0. 8) Cheater knowing Fluid Dynamics? - Red Sox ace Jon Lester pitched...