Some friends drop a water balloon out of a window 12.0 m above the ground.  As it falls, one of the pranksters cries out to warn the person below, 1.5 s after releasing the balloon.  If the air temperature is 28.0oC and if the person below is able to move infinitely fast upon hearing the warning, will the person avoid the balloon?

Q: A car horn has a frequency of 720 Hz. In which of the following situations would you hear an average…

A: Given: The actual frequency of the car is 720 Hz. The apparent frequency is 690 Hz.

Q: A supersonic jet traveling at Mach 2.50 at an altitude of h = 23 000 m is directly over a person at…

A:

Q: A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver…

A: The expression to solve for the apparent frequency heard by the passenger at the back of the train…

Q: Suppose you are part of a team that is trying to break the sound barrier with a jet-powered car,…

A: The speed of the sound in air is ,

Q: The acceleration of a particle is given by a(t) = kt3/2, where k is a constant. Find the position…

A: The acceleration of the particle is given by,  atdt=kt32  -----1 Here, k is a constant.   Integrate…

Q: of

A: In the doppler effect, the frequency of waves varies when the source and observer move closer or…

Q: The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find the wavelengths of…

A:

Q: At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down…

A: Apparent frequency heard by bicyclist is less than the actual frequency. It means that the source is…

Q: At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down…

A:

Q: At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down…

A:

Q: A man stands by the roadside when an ambulance passes by him with constant velocity 18 m s-1. The…

A:

Q: Q:19 A driver travels northbound on a highway at a speed of 32.2 m/s. A police car also traveling…

A:

Q: The speed of sound in vacuum at 250 degree C is: O a. 1.17 m/s O b. 200.275 m/s O C. 386.87 m/s O d.…

A:

Q: A fire engine moving at a speed of 34.0 m/s and blows the siren with a frequency 290 Hz. A truck is…

A: Given thatSpeed of listener VL=14.0m/sSpeed of the source Vs=34.0m/sVelocity of the sound in air V=…

Q: The observer sees a plane vertically above him and hears it after 1.5 seconds, while the plane…

A: Here given that the observer hears the sound of plane after 1.5 sec while it enclose an angle 35°.…

Q: Careless Doug is standing on the summit of Mount Whitney (elevation 14,505 ft) while his prudent…

A:

Q: A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver…

A: For the part a we need to calculate the part b first. (b) The horn's frequency is given by the mean…

Q: An ambulance is traveling East at 20m/s. The siren emits a fixed frequency of 220Hz. Each of the…

A: The ambulance is traveling at 20 m/s and emits sound at a frequency of 220Hz.

Q: A lightning bolt is observed and the resultant thunderclap is heard 5 seconds afterwards. Assuming…

A: Given :- speed of sound in air  v= 340 m/s   time after which Thunderclap heard is  t = 5 sec

Q: Female mosquitoes emit a buzz at 400 Hz, whereas male mosquitoes typically emit a buzz at 600 Hz. As…

A:

Q: The frequency of an ambulance siren is 1000 Hz at rest. Ahmad, which is in his car, hears the…

A: frequency of ambulance siren at rest = 1000 Hz Frequency heard by Ahmad in his car = 1010 Hz

Q: child dropped a ball from a building. The sound of it hitting the water of the swimming pool below…

A:

Q: A train moving at a speed of 25.0 m/s sounds its whistle, which has a frequency of 4.00 x 10^2 Hz.…

A: Given Original frequency f = 4 × 102 Hz Speed of source vs = 25 m/s Speed of sound v = 345 m/s

Q: An echo is heard after 5 seconds of the production of sound which moves with a speed of 340 m/s.…

A: We know that formula for speed is: speed=distancetime Hence, Distance=speedtime

Q: A train moving at a speed of 25.0 m/s sounds its whistle. which has a frequency of 4.00 x 10^2 Hz.…

A: Given data:  Speed of the train (vs) = 25.0 m/s Train approaches the stationary observer  Frequency…

Q: During a thunderstorm, 3.0 s elapses between observing a lightning flash and hearing the resulting…

A: Given, During a thunderstorm, 3.0 s elapses between observing a lightning flash and hearing the…

Q: You are on the relaxing on the beach (not moving). A speedboat honking its 450 Hz horn is coming…

A:

Q: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…

A: A supersonic airplane has a speed of 1.5 times the speed of sound. If an observer is 5 km from the…

Q: An ultrasonic transmitter and receiver are placed 6.7 ft above the surface of a liquid. How long…

A:

Q: A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver…

A: The front of the train is moves away from the sound source and the rear part moves towards the sound…

Q: A projectile is approaching you at 50 m/s and whistling with a frequency of 300 Hz if heard by an…

A:

Q: My heart beats 124 times in two minutes. Determine the frequency of my heartbeat. O 2.0 Hz O 0.48 Hz…

A:

Q: There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers…

A: In this question we have to determine the location of landing of the rovers of NASA based on the…

Q: A train is moving past a crossing where cars are waiting for it to pass. While waiting, the driver…

A:

Q: A person stands at a point 380 m in front of the face of a sheer cliff. If the person shouts, how…

A:

Q: At rest, a car's horn sounds the note A (440 Hz). The horn is sounded while the car is moving down…

A: Given Source frequency    fo = 440 Hz Observed frequency f = 407 Hz

Q: An ambulance is traveling East at 40m/s. The siren emits a fixed frequency of 440Hz. Each of the…

A:

Q: Wyle E. Coyote hears a constant “Beep! Beep!” from around the corner of a cliff. Thinking it might…

A: Given data: The speed of the truck is, vt = 25 m/s The speed of the Coyote is, vc = 100 m/s The mass…

Q: A person stands at a point 348 m in front of the face of a sheer cliff. If the person shouts, how…

A:

Q: A chimpanzee is standing not too far from a tall cliff. He lets out a loud bark and is startled to…

A: Distance = Speed X time  2d =v*t  2 d = 331*0.83  d = 137.365 m

Q: 39. An observer stands 25 m behind a marksman practicing at a rifle range. The marksman fires the…

A: Speed: v=distancetime Given: Distance between marksman and observer, d=25 m Speed of bullet, vb=840…

Q: 1 A train approaching a hill at a speed of 40 km/hr sound a whistle of frequency 580HZ when it is at…

A:

Q: The speed (v) at which sound travels through air is dependent upon the temperature of the air and…

A: The velocity expression is defined as,

Q: The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find the wavelengths of…

A: Given data: Hearing range for human = 20 Hz to 20000 Hz Need to determine the wavelengths of these…

Q: A cannon fires a shell directly at you from 2000 m away, at a speed of 216 m/s. The speed of sound…

A:

Estimate of calculation