3) Each piston of an engine makes a sharp sound every other revolution of the engine. (a) How fast is a race car going if its eight-cylinder engine emits a sound of frequency 750 Hz, given that the engine makes 2000 revolutions per kilometer? (b) At how many revolutions per minute is the engine rotating?

Q: dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of…

A: Given data :     Depth of the ocean = 430 m     Temperature of sea water = 25°C Speed of sound in…

Q: A 1.0 kg object is dropped in a trampoline which causes it to vibrate with a frequency of 3.0 Hz. At…

A:

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 129 km/h; train 2, a…

A: Given, speed of the train 1 (observer), vo = 129 kmh speed of train 2 (source), vs = 89.0 kmh…

Q: When two tuning forks A and B are sounded together a beat frequency of 3 Hz is produced. When B in…

A: Before loading with wax, the beat frequency is, fb=3 Hz And it is also given that the frequency of A…

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 130 km/h; train 2, a…

A:

Q: A source of sound is moving on a circular path with an angular speed of 4 rad/s as shown. The…

A:

Q: The volume control on a stereo is designed so that three clicks of the dial increase the output by…

A: Since the decibel scale is a logarithmic one, an increase of a fixed number of dB for each click…

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

A: (a) Consider that the observed frequency is smaller than the source frequency that is 411 Hz<440…

Q: The lowest natural frequency of a vibrating system is called as its

A: Given :- The lowest natural frequency of a vibrating system is called as

Q: What is the PERIODICITY of a swaying tree if it takes the tree 1.75 Hz to sway back & forth?

A:

Q: If a tree falls in a forest where there is no one to hear, does it make a sound?

A: When a tree falls on the ground in a forest the impact of tree on the ground produces a disturbance…

Q: What kind of motion should you impart to the nozzle of the garden hose so that the resulting stream…

A: Sine curve: It is a period curve. In physics this curve is used to define the motion of the…

Q: an ambulance moving toward a person at 126 km/hr. The person is jogging towards the ambulance at 19…

A:

Q: A bat emits a sound at a frequency of 30.0 kHz as it approaches a wall. The bat detects beats such…

A: The given data are: f1=30 kHz=30000 Hzfb=900 Hzc=340 m/s Here, f1 is the frequency of the sound…

Q: A jet airplane will create a sonic boom if O It's traveling at least twice the speed of sound. It's…

A: Sonic boom is a noise similar to thunder.Sonic booms generate a huge amount of sound energy,…

Q: Which drum would be BEST if a drummer wants to play a song with many low notes? a small drum with…

A: Required : Which drum would be the best for producing low sounds.

Q: Why do sounds get fainter the farther you are from their sources?

A: Solution:- There are mainly two reasons.   1. When we are away or moving away from the sound source…

Q: A guitar string is fixed at both ends. If you tighten it to increase its tension O the frequencies…

A:

Q: A police siren has a frequency of 340.0 Hz when the car is stationary and the temperature is 20°C.…

A: Given: Frequency of siren = 340 Hz Temperature = 20 degree C Speed of car = 22 m/s

Q: On increasing the temperature, the speed of sound in air: O a. increases O b. does not change O .…

A: The formula for calculating speed of sound in air is v=331m/s+0.6m/sC×T Where T is the temperature

Q: You are traveling at 38m/s toward oncoming car traveling at 28m/s toward you. Just before it reaches…

A:

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 1.30 x 102 km/h; train…

A:

Q: A guitar string has a length of 642.0 mm and a mass of 3.70 g. The rope presents its fundamental…

A: Given data f=980Hz

Q: A truck sounds a horn with a frequency of 115 Hz as it approaches a cliff. The speed of the truck is…

A: original frequency:f0=115 Hzspeed of truck,v=10.5 msspeed of sound,vs=346 ms

Q: length is open at both ends. The frequency of a certain harmonic is 410 Hz, and the frequency of the…

A: Fundamental frequency of open orgon pipe =v/2L

Q: A flute is played with a first harmonic of 196 Hz (a pitch of G3). The length of the air column is…

A:

Q: Give at least two factors that determine natural frequency of an object?

A: An alteration in either speed or wavelength will result in an alteration of the natural frequency.…

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

A: We know the Doppler's Equation to find the Speed of car f0= fsv+v0v+vsv0 is the speed of bicyclist…

Q: A motor vehicle to carry astronauts on the surface of the moon has a spring suspension and has a…

A: Given values:- Frequency on the earth,(νE)=0.40 Hz -------(1) [Given] Let us suppose the frequency…

Q: If a wind is blowing, will this alter the frequency of the sound heard by a person at rest with…

A: Let the speed of wind be vm.

Q: Two strings are vibrating at the same frequency of 195 Hz. After the tension in one of the strings…

A: GivenTwo string are vibrating at same frequency,n1=195 HzAfter tension in one string is decreased,…

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

A:

Q: A plane flies directly over you at a constant velocity and an altitude of 750 m. You hear a sonic…

A:

Q: Logan is waiting for the bus at its stop. He hears the siren of an ambulance. The siren of the…

A: Frequency of siren of ambulance (f) = 1400 Hz Temperature (T) = 5oC

Q: The Bay of Fundy, Nova Scotia, has the highest tides in the world. Assume in midocean and at the…

A: The speed of the long wavelength water wave is,

Q: Two trains on separate tracks move toward each other. Train 1 has a speed of 149 km/h; train 2, a…

A: Speed of observer train(Vo)=149 km/h speed of source train( Vc)=95.0 km/h source frequency (fo)= 500…

Q: The windpipe of a typical whooping crane is about 5.4 feet long, what is the lowest resonant…

A:

Q: A string is 4.00m long and is held in place at both ends. The string is stretched to a tension of…

A:

Q: People can hear sounds ranging in frequency from about 24 Hz to 23 kHz . Assume the speed of sound…

A: Write the given values with the suitable variables. v=340 m/sf1=24 Hzf2=23 kHz=23×103 Hz Here, v,…

Q: A pin with a mass of 0.15 g falls from rest on a table 1.0 m high.When striking the ground, 0.02% of…

A: The pin has a potential energy PE = mgh. When it falls onto the ground all its PE is converted into…

Q: A weight on the end of a spring bobs up and down one cycle every 4.0 seconds. The frequency is .25HZ…

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: Observer's frequency, fo=416 Hz Source frequency, fs=440 Hz observer speed = 18 speed of…

Equation of Waves

Wave is an oscillation or disturbance traveling in a medium. It performs the transportation of energy but does not carry any matter. This motion of waves will transport fuel in a medium without permanent transfer of mass (particle).