Question: A sinusoidal wave can be described by a cosine function, which is negative just as often as positive. So why isnt the average power delivered

A sinusoidal wave can be described by a cosine function, which is negative just as often as positive. So why isn’t the average power delivered by this wave zero?

Step by Step Solution

★★★★★

3.47 Rating (167 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

As Eq1521 shows the power at a point on the string at ... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related University Physics Questions!

Equation (15.7) for a sinusoidal wave can be made more general by including a phase angle Ф, where 0Ф2 (in radians). Then the wave function y(x, t) becomes y(x, t) = Acos (kx - wt...

In a real string, a wave loses some energy as it travels down the string. Such a situation can be described by a wave function whose amplitude A(x) depends on x: y = A(x) (kx- t) = (A 0 e-bx ) (kx -...

Sampling of sinusoidal signal: aliasing consider the following continuous-time sinusoidal signal xa(t) = sin2?F01, - ???? t ??? ? Since xa (t) is described mathematically, its sampled version can be...

Part 2: Making the connection between mechanical waves on a string and Electromagnetic Waves. (6 pts) For any mechanical wave the wavefunction contains all the information about the propagation speed...

Lab 13: Waves & interference Learning Objectives Differentiate between types of waves. Understand how to mathematically describe traveling waves. Understand how to model the propagation of a pulse on...

2: Making the connection between mechanical waves on a string and Electromagnetic Waves. HELP due tonight https://phet.colorado.edu/sims/html/wave-on-a-string/latest/wave-on-a-string_en.html Reopen...

Understanding the Fourier series (40 points) First, review section 3.2.2.2 of your textbook. Then, to understand the implications of the number of harmonics used to reconstruct a signal, consider the...

This text was adapted by The Saylor Foundation under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License without attribution as requested by the work's original creator or licensee. 1...

answer the all question please equired Homework Questions The concept of earnings power is the long-term (3 to 5 year) expectation of the company's earnings after any near-term anomalous behavior has...

Since the average price of a car has increased substantially over the last 30 years, and the number of cars owned has risen faster than the population, doesnt this mean that the demand curve for cars...

Given the following information, construct the firms balance sheet: Cash and cash equivalents................$ 300,000 Accumulated depreciation on plant and equipment..800,000 Plant and...

The tendency for investors to too slowly update their beliefs in response to new evidence is called Multiple choice question. overconfidence. representativeness bias. sample - size neglect....

List five items that should be included on the resume.

If a + at rest decays into a proton and a 0 , what is the total kinetic energy of the decay products?

What is the mass (in kg) of the Z 0 ? What is the ratio of the mass of the Z 0 to the mass of the proton?

How much energy is released when a - muon at rest decays into an electron and two neutrinos? Neglect the small masses of the neutrinos.

Cost of debt For which capital component must you make a tax adjustment when calculating the weighted average cost of capital (WACC) for a firm? Equity Debt Preferred stock Bedrick Co. can borrow at...

On Sep 1 9 th , you sold short 5 , 2 0 0 shares of AAPL's stock at $ 1 5 6 per share. Your initial margin requirement is 5 0 percent. Assuming there was no commission and interest fees and no...

Guano Industries is currently selling for $ 8 0 . 0 0 . It just paid its annual dividend of $ 1 . 0 0 , which have consistently grown at a rate of 3 . 1 0 % . What is the expected return of this...