which-of-the-following-is-a-true-statement-about-standing-waves-a-standing-waves-have-zero-amplitu-2

Question

Which of the following is a true statement about standing waves?
(A) Standing waves have zero amplitude at antinodes.
(B) Standing waves have maximum amplitude at nodes.
(C) Complete constructive interference occurs at nodes.
(D) Complete destructive interference occurs at nodes.

Salamat Ali · Accepted Answer

Ocean D is the right answer because a completely destructive interference, ofcourse it there north.

Ze-Han Lee · Answer

So in this problem, we&#x27;re looking in the standing wave. So this anyway. Okay. And we have ah three statements. The 1st 1 states that Ah, a note is the position where the constructive interfere occurs. So this is incorrect if it is Ah, constructive interference than the amplitude would be the maximum. Okay, it&#x27;s right here. So this is the constructive and ah, the 2nd 1 says that notice the position where the destructive interference occurs. So this is a correct. So it&#x27;s right here. This is these destructive and the same says that the amplitude is maximum So this is incorrect because the the position where the position where the opportunity is maximum is the position where it is. Ah ah, It is undergoing the constructive interference. Okay, so we see that the only bees, right?

Sam Limsuwannarot · Answer

to the question here wants us to see which of the statements have been effect about on the frequency. So he here says that heavy, fast moving objects have lower frequencies and light, fast moving objects. So this is first of all, determined By using the de Broglie equation. Lambda is able to age over m times V. So let&#x27;s say we have a heavy object. So the value of M is going to be great and we have a fast a moving object so nonetheless, what this shows is that our value m times visa, our momentum is going to be very high, very great in general. So if we compare that to a lighter one, it&#x27;s going to be basically the effects on the wavelength is that if we have a greater value of the denominator, the wavelength is gonna get, um, in this particular case smaller and smaller. So it is going to have a greater frequency as wavelength is inversely proportional to the frequency. So this one is going to be false. Come be here states that only very light particles could have high frequencies. And generally speaking, this would be true. However, we have to take this into account with velocity. So generally speaking, very light particles are going toe also have very, very high frequency ending velocities. So in this particular case, it is going to make the momentum p here, which is equal to M. Times V is gonna make that value very high. So generally speaking, it&#x27;s going toe make the wave with smaller and smaller. So this would be true. So yes, that&#x27;s true. And see here says, doubling the mass and having its velocity results. No change. That is true this because if you double the mass here, so let&#x27;s say you have to be time is 1/2 feet. Essentially, what you&#x27;re doing is canceling it, so this is going to be true.

Keenan Mintz · Answer

So now we work on problem sixteen from Chapter six. In this problem, we&#x27;re told to determine which of the following statements are false and correct them. The first statement is a which is the frequency of radiation increases as the wavelength increases. And we know this is false because they should have an inverse relationship. So we could say is frequency your first of all, let&#x27;s go ahead and write that this is false and so it could correct it by saying frequency ah increases as wavelength decreases. In part be the statement which we are given is electromagnetic radiation travels through a vacuum at a constant speed, regardless of wavelength. And this is a true statement because we know that the wavelength will change the frequency. The different wavelengths will make different frequencies, but it will not change the speed of light. So that is true. So then we can move on to part see where the statement that we&#x27;re given us infrared light has higher frequencies on visible light. Now, this is false because we know infrared light has lower energy than visible light. And so we know that frequency and energy are directly related. So we say I R has lower frequencies van Visible light because thie energy is lower, then for party in a statement which were given is electromagnetic radiation and sound waves. Travel at the same say that&#x27;s the wrong problem. The part deeper question sixteen is the glow from the fireplace, the energy with a within a microwave oven and a far corn blast or all forms of electromagnetic radiation. So this is false. We know that. Ah, the first two are electromagnetic radiation. But the third one, Miss Thea Fog horn blast is a sound wave or a sonic wave. So to correct a statement, we would say that only glow from the fireplace and energy from major wave R electromagnetic radiation.

Ze-Han Lee · Answer

All right. So for this problem, uh, so the characteristics of the simple harmonic motion, uh, in the choice a the etcetera essays acceleration is constant. Um, so I suppose this is a spray attached the wizard block, As you can see, that the acceleration is changing, right? So the is not right for B. We see that, uh, the restoring force is proportional to the displacement. That is right. Because according to the hook&#x27;s law, ethical K X, right, this effort just the magnitude. So as you can see, that s next becomes larger and larger and their linear proportional. So this is right. And for C, the frequencies, the independent of the amplitude. So that is also right, because the frequency only depends on the mass of the block and the spring constant of the spring. So that is right. And for party, uh, it says the period depends on he says the period depends on the amplitude. So because the period equal one over f right, So if f only depends on M and K T only depends on the K T does not depend on that&#x27;s not depends on the magnitude. So this is not right. So the to join the corrective choices are B and C. Okay,

Averell Hause · Answer

So in this figure, it&#x27;s sort of looking like this. We have a positive slope where we have frequency and hurts on the side on the X axis. And then we have speed and centimeters per second on the Y axis. And we can say that V equals Lambda F. And if we were to say this and we&#x27;re modeling V vs F, we could say that the slope is going to be wavelengths. So if the slope of this curve is equal to the wavelength and it&#x27;s a linear slope, slope doesn&#x27;t change. So that means that the correct the correct option is going T. C. C is going to be the craft option because wavelength doesn&#x27;t change. And we can see that from the equation again if if ah Via is directly proportional to F. And if V is increasing as the freak, If the speed of speed of propagation is increasing as thie um as the ah frequency is increasing and the slope is linear and equal to Lambda, no matter how much we increase the frequency or how much we lower the frequency again, that wavelength will not change. And that&#x27;ll be the end of the solution. Thank you for watching

Problem

A) NO CHANGE B) whom wants C) who wanted D) sh…

Problem 38 Medium Difficulty

Which of the following is a true statement about standing waves?
(A) Standing waves have zero amplitude at antinodes.
(B) Standing waves have maximum amplitude at nodes.
(C) Complete constructive interference occurs at nodes.
(D) Complete destructive interference occurs at nodes.

Answer

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