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Which of the following statements about sea surface temperature is evidence of an El Nino year?
greater than normal in the Eastern Pacific
What is the complete predicate in volcanoes are places on the earths surface where molten rock gases and ash from deep inside the earth are ejected?
"are places on the earth's surface where molten rock, gases, and ash from deep inside the earth are ejected."
What is the relation between number of photons incident on a metal surface and number of electrons ejected out of the metal is there any formula for it?
The first thing you have to know ... maybe the most important thing about the whole situation ... is thatunless EACH of your photons carries enough energy, you won't dislodge ANY electrons, no matter HOW MANYphotons you throw at the metal.That means that for any given metal, there is a certain frequency (wavelength / color) below whichthe incident radiation won't pry any electrons loose, no matter how intense it is.This is called the 'photoelectric effect'. I think it was the subject of the paper that won Einstein his first Nobel,about 100 years ago. He showed it to be a powerful argument for the notion of light as particles.
When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
i have the same question on my test haha for me, the answers are: a) The number of electrons ejected per second b) the maximum kinetic energy of the ejected electrons c) the threshold frequency of the ejected electrons d) the time lag between the absorption of blue light and the start of emission of the electrons e) none of these A the number of electrons ejected per second,,,,, correct answer
What type of microscope can produce three - dmensional images of a cell's surface?
Scanning Electron Microscope (SEM)
When an electron is ejected from the surface what type of energy does the electron possess?
The ejected electron possesses kinetic energy as it moves away from the surface.
If red light can cause an electron to be ejected from the surface of a piece of cobalt statements is most likely true?
Yes, that statement is most likely true as red light has enough energy to cause the photoelectric effect, where electrons are ejected from a material's surface. This phenomenon occurs when photons of light transfer their energy to electrons, allowing them to overcome the material's work function and be ejected.
What is ejected when light strikes a metal surface?
Electrons are ejected from a metal surface when light strikes it. This phenomenon is known as the photoelectric effect. The ejected electrons are called photoelectrons.
What determines if electrons are ejected from the surface?
The ejection of electrons from a surface is determined by the energy of the incoming photons or particles. If the energy is high enough, it can overcome the binding energy of the electrons in the material, causing them to be ejected.
In what way does the photoelectric effect support the particle theory of light?
The photoelectric effect occurs when light photons hit a material's surface, ejecting electrons. This demonstrates that light can transfer discrete packets of energy (photons), supporting the particle theory of light proposed by Einstein.
What is auger effect?
When photons of sufficient energy are incident on a surface, an electron is ejected out from the core shell. The electron from the p-orbital or any other orbital of higher energy loses that much energy to fill up the gap created by the loss of this core electron. The energy lost by the p-orbital electron is absorbed by another electron in the same or higher shell, causing it to eject from the atom. This second atom is called the "Auger electron" and the effect is called Auger effect.
What actions or statements among the following represent an overtone?
An overtone is a subtle or underlying meaning or implication that is not explicitly stated. In the context of actions or statements, an overtone could be something that suggests a deeper or hidden message beyond the surface level.
Which of the following statements about sea surface temperature is evidence of an El Nino year?
greater than normal in the Eastern Pacific
What occurs when light strikes a metal and electrons are released?
When light strikes a metal, it transfers energy to the electrons in the metal, causing them to be ejected in a process known as photoelectric effect. These ejected electrons are called photoelectrons and can be used in applications such as photovoltaic cells and photoemission spectroscopy. The energy of the ejected electrons is proportional to the frequency of the incident light.
What is the complete predicate in volcanoes are places on the earths surface where molten rock gases and ash from deep inside the earth are ejected?
"are places on the earth's surface where molten rock, gases, and ash from deep inside the earth are ejected."
What are craters on a planet?
Craters are where a chunk of space debris, such as a meteor or comet, has struck the surface of the planet and has caused material from the planets (or moons) surface to be ejected outwards.
What effects did scientists originally think that the intensity of light shining on a photosensitive surface would have on electrons ejected from that surface?
Scientists originally thought that the intensity of light would affect the number of electrons ejected, but not their energy. They believed that increasing the intensity would only result in more electrons being emitted from the surface, without impacting their kinetic energy.
