Two train whistles have identical frequencies of 1.80 x 102 Hz. When one train is at rest in the station and the other is moving nearby, a commuter standing on the station platform hears beats with a frequency of 2.00 beats/s when the whistles operate together. What are the two possible speeds and directions that the moving train can have?

Question

Two train whistles have identical frequencies of 1.80 x 102 Hz. When one train is at rest in the station and the other is moving nearby, a commuter standing on the station platform hears beats with a frequency of 2.00 beats/s when the whistles operate together. What are the two possible speeds and directions that the moving train can have?

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Science
Physics

Vibrations

Related Physics Q&A

Find answers to questions asked by students like you.

Q: An airplane traveling at half the speed of sound emits a sound of frequency 5.00 kHz. At what freque...

A: a). Consider the formula for frequency of sound heard from a approaching airplane is,

Q: What besides the amount of light affects the size of the pupil of the eye?

A: The pupil response to cognitive and emotional events occurs on a smaller scale than the light reflex...

Q: State Faraday's law?

A: The discovery and understanding of electromagnetic induction are based on a long series of experimen...

Q: This is a symbolic version of Problem 54. When a metal bar is temporarily connected between a hot re...

A: Step 1When there is change in heat Q at constant absolute temperature, then entropy changes asQ is p...

Q: One of the most efficient engines ever built is a coal-fired steam turbine engine in the Ohio River ...

A: Part A:

Q: A 25.0-pm x-ray photon scatters off a free electron at A (Fig. P27.26), producing a photon of wavele...

A: a). Write the Compton shift formula as

Q: Which have longest wavelengths- light waves, X-rays or radio waves?

A: According to the electromagnetic spectrum the range of wavelength for different type of electromagne...

Q: A heat pump has a coefficient of performance of 3.80 and operates with a power consumption of 7.03 x...

A: Click to see the answer

Q: A car’s 30.0-kg front tire is suspended by a spring with spring constant k = 1.00 × 105 N/m. At what...

A: Formula to calculate the oscillation frequency is,

Q: A 70.0-kg log falls from a height of 25.0 m into a lake. If the log, the lake, and the air are all a...

A: Click to see the answer

Q: Who extended Faraday's law to changing electric fields?

A: Faraday’s law of electromagnetic induction states that the changing magnetic flux produces electric ...

Q: About how much of the measured electromagnetic spectrum does light occupy?

A: The range of visible light in terms of wavelength is 390nm to 700nm.

Q: Lithium, beryllium, and mercury have work functions of 2.30 eV, 3.90 eV, and 4.50 eV, respectively. ...

A: a). The energy of the incident photon is,

Q: A chain of nuclear reactions in the Sun’s core converts four protons into a helium nucleus. (a) What...

A: (a). the mass difference between four protons and a helium nucleus is

Q: For a blackbody at given temperature, Amax is the wavelength at the peak of the radiation distributi...

A: According to Wien’s displacement theory of black body radiation, the spectral radiance in black body...

Q: An object moves uniformly around a circular path of radius 20.0 cm, making one complete revolution e...

A: Click to see the answer

Q: A tuning fork vibrating at 512 Hz falls from rest and accelerates at 9.80 m/s2. How far below the po...

A: Let v be the velocity of sound, v1 be the velocity of receiver, v2 be the velocity of tuning fork, f...

Q: A soft drink bottle resonates as air is blown across its top. What happens to the resonant frequency...

A: The bottle of soft drink is like a pipe with one end closed. The change in the resonant frequency ca...

Q: Show that the kinetic energy of a nonrelativistic particle can be written in terms of its momentum a...

A: (a).The kinetic energy of the particle is

Q: In a nonrelativistic experiment, an electron and a proton are each located along the x-axis to withi...

A: From uncertainty principle, the minimum uncertainty in the x-component of the velocity of the electr...

Q: A dolphin located in seawater at a temperature of 25°C emits a sound directed toward the bottom of t...

A: Formula for the distance of the dolphin is,

Q: At time t = 0, a vessel contains a mixture of 10. kg of water and an unknown mass of ice in equilibr...

A: Formula to calculate the rate of energy supplied by the source is,

Q: Consider electrons accelerated to a total energy of 20.0 GeV in the 3.00 - km - long Stanford Linear...

A: Click to see the answer

Q: Does a viewer see single color or a spectrum of colors coming from a faraway drop?

A: Click to see the answer

Q: (a) You are driving down the highway in your car when a police car sounding its siren overtakes you ...

A: The frequency of the car that is catching up can be found using the concept of Doppler effect. Doppl...

Q: A 0.001 60 - nm photon scatters from a free electron. For what (photon) scattering angle does the re...

A: If the scattered photon has energy equal to the kinetic energy of the recoiling electron, the energy...

Q: Prepare a table like Table 12.3 for the following occurrence: You toss four coins into the air simul...

A: Part A:

Q: What are three ways in which voltage can be induced in a wire?

A: According to the Faradays law, inducing a voltage into a conductor can be done by either passing it ...

Q: What color light is transmitted through a piece of red glass?

A: When an electromagnetic waves incident on an object that composes all the seven color then all the c...

Q: What effect, if any, would you expect the temperature of a material to have on the ease with which e...

A: Photo electric effect is the emission or ejection of electron from the surface of metal when a light...

Q: If the spring shown in Figure CQ13.3 is compressed rather than stretched so that x = -x0, determine ...

A: Part A:

Q: A proton, an ant, and a baseball each have the same kinetic energy. Rank their de Broglie wavelength...

A: The expression for de Broglie momentum,

Q: How far, and in what direction, should a cellist move her finger to adjust a string’s tone from an o...

A: The vibrating part of the length of string is,

Q: What is the relationship between refraction and the speed of light?

A: Click to see the answer

Q: Why does piece of white paper appear white in white light, red in red light, blue in blue light and ...

A: Black colour absorbs all the lights which falls on it.White colour does not absorb any light hence i...

Q: Can a surface be polished for some waves and not for others? Cite an example.

A: Click to see the answer

Q: Why is the foam of root beer white, while the beverage is dark brown?

A: In the case of foam, it is composed of tiny bubbles of very thin layers; therefore; the scattering i...

Q: A trumpet creates a sound intensity level of 1.15 x 102 dB at a distance of 1.00 m. (a) What is the ...

A: (a)Formula to calculate the sound intensity of a trumpet is,

Q: Choose the option that makes the following statement cor- rect. Two events at a single location defi...

A: Proper time is the time interval measured between two events as measured by an observer who sees the...

Q: A Carnot engine operates between 100°C and 20°C. How much ice can the engine melt from its exhaust a...

A: Click to see the answer

Q: What happens to the speed of a wave on a string when the frequency is doubled? Assume the tension in...

A: Click to see the answer

Q: A 2.00 - kg object on a frictionless horizontal track is attached to the end of a horizontal spring ...

A: Part a:

Q: Is glass transparent or opaque to light of frequencies that match its own natural frequencies? Expla...

A: Any material is transparent to frequencies that don’t match with its own natural frequency.

Q: Is the current that is produced by a common generator ac or dc?

A: There are several types of common generator,Gasoline generator,Diesel generator,Bio diesel generator...

Q: An ethernet cable is 4.00 m long and has a mass of 0.200 kg. A transverse wave pulse is produced by ...

A: Click to see the answer

Q: The free - fall acceleration on Mars is 3.7 m/s2. (a) What length of pendulum has a period of 1.0 s ...

A: Part a:

Q: Earth’s surface absorbs an average of about 960. W/m2 from the Sun’s irradiance. The power absorbed ...

A: Write the expression for the power absorbed by the Earth’s surface from the Sun’s irradiance.

Q: What color does red cloth appear to be when illuminated by light from neon sign?

A: The color of an object depends upon the kind of light falls on the surface and the nature of the sur...

Q: What is the color of visible light of the highest frequencies?

A: When the oscillations are faster, the frequency is high. Thus the energy is also high. Therefore, th...