- #1
Helly123
- 581
- 20
Homework Statement
2. Homework Equations
Doppler's Equation
The Attempt at a Solution
(1)[/B] freqA = (v sound - vA )/(v sound - v B) . freq B
*v A = 0 (static)
= V/(V - v) . freq B ...Answer : (d)
(2) freq A hear which is reflected sound by D
first find freq D, *v D, v A = 0 (static)
freq D received from B = (v sound - v D) / (v sound + v B) . freq B
freq D = V / (V + v) . Freq B
freq A = (v sound - v A) / (v sound - v D) . freq D
freq A = V / V . freq D
freq A = V / (V + v) . Freq B ...Answer : (c)
(3) can someone give me clue about this one?
(4) freq C = (v sound + v C) / (v sound - v B) . freq B
freq C = (V + v) / V . Freq B... Answer : (a)
(5) freq A which reflected by D
freq D received from B = (v sound + v D) / (v sound - v B) . freq B
freq D = (V + v)/V . freq B
freq A received from D = (v sound - v A)/(v sound - v D). freq D
freq A = (V) / (V - v) . (V + v) / V . freq B
freq A = (V + v) / (V - v) . freq B ...Answer : (e)are the other numbers also in right way?