Question

Problem 1. This problem has 4 parts. Texto en Español abajo. A singer quartet consisting of Angel, Betty, Carlos and Diana wants to practice their singing. However due to the pandemic they decide to do so at a baseball park to keep social distancing. Angel stands on the home plate, Betty goes to third base, Carlos to second base and Diana to first base. While they are getting ready a bird flies along the line joining third base and home, Betty says "That bird is singing at a frequency of 350 hertz", but Angel says "No, it is singing at 340 hertz." Soon after the bird leaves the park Diana sings a 440 hertz note, Carlos hears it 0.1 second later and sings a 261 hertz note. Parta Make a drawing of the bird's flight path along the line joining third base and home, with an arrow indicating the direction of flight, towards home or away from home. Part b Explain why you chose that direction, include any equations that support your explanation. Partc How far is Carlos from Diana? Show your calculations. Part d What is the period of Carlos' note at 261 Hertz. Include your calculations

Answer 1

@@© Angel Glying direction Betty HOME Base-3) 3 clearly Betty is feelin Here Angel & Betty are observers of sound high frequency (350 H₂) and bird is the source of sound. and Ange is feeling het f be the original frequency of bird ? low frequeny (340 H₂). and of" be the observed frequency } so it is clear that, the bird Let's use doppler effect { is flying away from frequency heard by Betty, } Angel but towards Betty But Birds original frequeny is) (between 350H3 & 340 Hz carlos sond frequency, f= 26143 fregnery heard by Angel, Time period, I = // i= f(V-V Angel ) V + V birds T = 0.00383 Seurus bird) 261 Hz

frequency of Diana 440 Hz het's take speed velocity in air = 34 om's time of travelling = o.1secored. Distance of travellin, S = Speed time S = (3 40. X 0.]m34m
taking velocity sound in air as 340m/s