What frequency does the girl now hear

Reference no: EM13655788

A girl is sitting near the open window of a train that ismoving at a velocity of 8m/s to the east. The girl's unclestands near the tracks and watches the train move away. Thelocomotive whisle emits sound at frequency 680 Hz. The air isstill. (Use 343m/s for speed of sound).

a. What frequency does the uncle hear?
b. What frequency does the girl hear?
c. A wind begins to blow from the east at 8m/s. What frequency does the uncle now hear?
d. What frequency does the girl now hear?

Reference no: EM13655788

Questions Cloud

Airplane with a speed problem : An airplane with a speed of 76 m/s is climbing upward at an angleof 44° with respect to the horizontal. When the plane's altitude is 500 m, the pilot releases apackage.

Which is produced with one input labour : In an economy there is only one output, cookies (C) which is produced with one input labour (L). The wage for labour is fixed at w per hour and the price of cookies is P. A firm in this economy has a production

Calculate the angular frequency in rads of the triangle : A rigid conducting loop has the shape of an equilateral triangle with sides a = 42 cm. Each side of the loop has aresistance of R = 3 W. Anexternal torque forces the loop to rotate at constant speed at anangular rate of 7 cycles per second about i..

Spring of unknown spring constant oscillates with a period : A block attached to a spring of unknown spring constant oscillates with a period of 2.0 seconds. What is the period when the mass is doubled?

What frequency does the girl now hear : A girl is sitting near the open window of a train that ismoving at a velocity of 8m/s to the east. The girl's unclestands near the tracks and watches the train move away. Thelocomotive whisle emits sound at frequency 680 Hz

Define this his average valuation as e : Define this his average valuation as E[v].

Maximum speed can mass have if string is not to break : A 0.40 kg mass, attached to the end of a 0.75 m string, is whirled around in a circular horizontal path. If the maximum tension that the string can with stand is 450 N, then what maximum speed can the mass have if the string is not to break?

What is the angle of refraction : The critical angle for a air-glass interface is 10.9 degrees.A ray in air is incident on the interface. The reflected ray is100% polarized. What is the angle of refraction?

Light reflected from a glass : Light reflected from a glass (ng = 1.59) plate immersedin ethyl alcohol (ne = 1.36) is found to be completelylinearly polarized. At what angle will the partially polarized beambe transmitted into the plate?

User Account

All Pages