Question

Asked Apr 15, 2019

79 views

Suppose the pulley absorbs a significant fraction of the energy in the wave so that the amplitude of the reflected wave is not equal to the amplitude of the wave set up with a vibrator. How will the standing waves differ from those established under conditions of perfect reflection? **Hint: **Remember what happens to the nodes when you add two waves of different amplitude. Will their superposition give zero amplitude?

Step 1

The following two cases arise for waves generated by the perfect reflection:

- The nodes of the incident wave and the antinodes of the reflected wave coincide with each other and give zero amplitude.
- The nodes of the incident wave coincide with the nodes of the reflected wave and give the amplitude two times that of the incident wave.

Step 2

If the amplitude of the reflected wave is not equal to the amplitude of the wave set up with a vibrator by some absorption of the energy from the incident wave then, the amplitude of this wave is neither zero nor twice of the amplitude of incident wave rather it would lie between zero and ...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: A series circuit containing inductance L1 = 1.7 H and capacitance C1 = 2.9 μF oscillates at angular ...

A: Write the expression for the angular frequency .

Q: A 45.1 mH inductor is connected as in the figure to an ac generator with εm = 30.0 V. What is the am...

A: (a) Write the expression for the amplitude of the resulting alternating current .

Q: 4. A bar on a hinge starts from rest and rotates with an angular acceleration α 10 + 6, where α is i...

A: Given: alpha = 10 + 6ttime, t = 4 sFind: The angle in radians through which the bar turns in the fi...

Q: Chapter 28, Problem 055 Your answer is partially correct. Try again. Two concentric, circular wire l...

A: Given:Radius of inner loop, r1= 29.4 cm = 0.294 mRadius of outer loop, r2 = 50.3 cm = 0.503 mCurrent...

Q: In Figure (a) particles 1 and 2 have charge 38.0 μC each and are held at separation distance d = 4.7...

A: Given,

Q: A spring is hung from the ceiling. A 0.426 -kg block is then attached to the free end of the spring....

A: Diagram of block and spring is given by.

Q: A 600.00 N ballast is hung from the end of a wire of cross-sectional area 0.0000010 m^2. The wire st...

A: a)The stress on the wire is,

Q: The curved section of a speedway is a circular arc having a radius of 190 m. The curve is properly b...

A: Given radius of the circular arc (r) = 190 metersSafe speed of the cars on curved path is (v) = 34 m...

Q: A 1.7 kg body oscillates in SHM on a spring that, when extended 2.4 mm from its equilibrium position...

A: Write the expression for the angular frequency of oscillation.