7. [6.66/20 Points] DETAILS PREVIOUS ANSWERS A particular opera ends with a violin playing a high B-flat (fviolin = 1865 Hz). The violin plays this note correctly. For dramatic effect, the soprano decides to walk toward the audience (and also toward the violin!) with a velocity of Vsoprano = 1.89 m/s. Please use the velocity of sound as Vsound = 346.7 m/s. Singer Violin Audience fviolin soprano What frequency does the soprano hear from the violin? fsoprano = 1875.17 The soprano sings a note which matches what she hears from the violin (NOT the original pitch). What frequency does the audience hear when listening to her? faudience = Hz What is the frequency of beats heard by the audience? fbeat = Hz NOTE: The audience hears two things: . The original frequency from the stationary violin. . The "double doppler shifted" note from the soprano