Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the source compare to those behind it?

Imagine a small observer is positioned in front of cork in your picture above. As the cork approaches, the observer measures the wavelength of the waves passing by. How does this wavelength compare to that measured from behind the source?

Imagine that this same observer measures the frequency of the waves instead of wavelength. How does the frequency measured in front of the source appear to the observer compared to the frequency measured from behind?

How do these results help explain why a car's engine sounds different as the car approaches you compared with after it passes?

The Doppler Effect is present in light waves as well. As you will learn in the Color Lab, red light has a lower frequency than blue light. Based on your observations in this experiment, what can you speculate about the motion of a distant star that appears "red-shifted" to astrophysicists? (The light appears redder than expected.)

Posted Date: 3/18/2013 4:16:14 AM | Location : United States

Ask an Expert

Related Discussions:- Visualize the effects of moving sources, Assignment Help, Ask Question on Visualize the effects of moving sources, Get Answer, Expert's Help, Visualize the effects of moving sources Discussions

Write discussion on Visualize the effects of moving sources
Your posts are moderated

Write your message here..

Related Questions

How can electricity make magnetic fields?, How can electricity make magneti... How can electricity make magnetic fields? In 1820, Oersted discovered that an electric current can produce a magnetic field. He happened to notice a compass move when he conn

What sources electromagnetic radiation, Question: What sources electrom... Question: What sources electromagnetic radiation (a.k.a. light a.k.a. electromagnetic waves)? select the one BEST answer. Answer: Note the significant distinction betwe

Explain simple pendulum, Explain Simple Pendulum Simple Pendulum : The... Explain Simple Pendulum Simple Pendulum : The A point mass suspended by a weight less and inextensible string to a friction less support is known as a Simple pendulum.

Evaluate the spring constant of the spring, A small ball with a mass of 60.... A small ball with a mass of 60.0 g is loaded into a spring gun, compressing the spring by 12.0 cm. When the trigger is pressed the ball emerges horizontally from the barrel ata hei

Electrostatics, what is the significne of electric field? what is the significne of electric field?

Which term have a radian per second unit in physics, In physics, a radian p... In physics, a radian per second is a unit of: a) Angular displacement b) Angular velocity c) Angular acceleration d) Angular momentum. Ans: A radian per

Antireflection films and interference filters, Q. What are antireflection f... Q. What are antireflection films and interference filters?   Ans.   Anti reflecting Films: When a beam of light travels normally from a medium of refractive index µ2 to a me

By whcih resistivity of conductors is most affected, Resistivity of conduct... Resistivity of conductors is most affected by (A) Composition.       (B) Temperature. (C) Pressure.             (D) Current. Ans: Resistivity of conductors is most

Can cph theory explain the physical conservation laws, Can CPH Theory expla... Can CPH Theory explain the physical conservation laws? Answer; sure, all the physical conservation laws come up of properties of CPH. Everything is made of a CPH. A CPH has sta

Determine the frequency of the supply, The voltage drops across two compone... The voltage drops across two components when connected in series across an a.c. supply are v1 =150sin 314.2t and v2 =90sin(314.2t -∏/5) volts respectively. Determine (a) the v