science

In a device known as a ______ electrons are emitted when light shines on a metal surface?

a difference in charge is called a ____

I am so stuck on these last two

  1. 👍 0
  2. 👎 0
  3. 👁 272
  1. (1) photocell or photomultiplier

    (2) The word they are probably after is "voltage", but that is really a measurement of electric potential. There is a voltage difference between two points if one point is "positive" and the other is "negative".

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    A metal foil has a threshold frequency of 5.45 x 10^14 Hz. Which color of visible light will not eject electrons from this metal? a) blue b) indigo c) violet d) orange c=(wavelength)(v) 3.0x10^8m/s = (wavelength)(5.45 x 10^14 Hz)

  2. chemistry

    We conduct an experiment by shining 500 nm light on potassium metal. This causes electrons to be emitted from the surface via the photoelectric effect. Now we change our source light to 450 nm at the same intensity level. Which of

  3. Chemistry

    The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 5.48 × 1014 s–1. With

  4. Chemistry

    It takes 254 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength of light (nm) that can be used to eject electrons from the surface of this metal via the photoelectric effect? I'd appreciate it

  1. science

    Study the scenario. A beam of light hits a sheet of metal. If it has enough energy, electrons break free from the metal sheet. Which choice correctly describes the behavior of light in this situation? A) In this situation, light

  2. physics

    A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of wavelength 600 nm. (a) Calculate the frequency of the emitted visible light. (b) How many photons per

  3. Chemistry

    A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold

  4. Chemistry

    A metal foil has a threshold frequency of 5.45× 1014 Hz. Which of the colors of visible light have enough energy to eject electrons from this metal.

  1. chemistry

    what is the binding energy of an electron in a photosensitive metal (in kj/mol) if the minimum frequency of light that can eject electrons from the metal is 6.3 x 20^14 Hz?

  2. Science

    Which statements show how a chemical bond is formed? (Select all that apply.) a. The valance electrons of an atom are emitted from an atom’s orbital. b. The valence electrons of a metal transfer to the valence shell of a

  3. science

    A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity.

  4. CHEMISTRY

    As you may well know, placing metal objects inside a microwave oven can generate sparks. Two of your friends are arguing over the cause of the sparking, with one stating that the microwaves "herd" electrons into "pointy" areas of

You can view more similar questions or ask a new question.