1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lesechka [4]
3 years ago
8

When a light of wavelength 570nm falls on the surface of potassium metal, electrons are ejected with a velocity of 6.4x104 m/s.

What is the minimum energy required to remove an electron from potassium metal?
Chemistry
1 answer:
Anarel [89]3 years ago
5 0

Answer:

3 x 10 m/s. = = 188 m. 1600 x 10 Hz λ. 8 max. 3. 3 x 10. = = 566 m. 530 x 10. FM λ. 8 ... (a) The equation relating and is c = where c is the speed of light = 3.00 x 10 ... Potassium metal can be used as the active surface in a photodiode because ... wavelength light (in nm) with quanta of sufficient energy to eject electrons from a.

Explanation:

You might be interested in
What is neutralization ?
blagie [28]

Answer:

"a chemical reaction in which acid and a base react quantitatively with each other"

Explanation:

5 0
2 years ago
If a sample of gold is a cube what is the length of each edge in centimeters
Irina-Kira [14]
<span>This question cannot be answered in actual centimeters unless at least one edge has a known length however it can be written as (length^3) or (length cubed). As an example if the sample of gold cube had one length of 3cm then all lengths would be 3cm on the cube.</span>
4 0
3 years ago
Mention two factors which affect pressure due to liquid contained in a vessel​
sveticcg [70]

Answer:

depth of the liquid and nature of liquid affects the pressure due to liquid contained in a vessel

3 0
3 years ago
Read 2 more answers
What is activation energy
egoroff_w [7]
The minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.


5 0
3 years ago
As the tempreture of a liquid increases the solubility of a liquid of that liquid
anzhelika [568]
As the temperature increases, the solubility of the solute in the liquid also increases.  This is due to the fact that the increase in energy allows the liquid to more effectively break up the solute.  The additoin of energy also shifts the equilibrium of the reation to the right since it takes energy to dissolve most things and you are adding more of it (this is explained with Le Chatlier principles).

I hope this helps and also I assumed that your question involved the solubility of an ionic substance in a solvent like water.  If that was not your question feel free to say so in the comments so that I can answer your actually question.
8 0
3 years ago
Other questions:
  • A tetrahedral molecule has ___ regions of high electron density around the central atom. these molecules have central atoms with
    7·2 answers
  • In a popular song from 1970, the musical group Crosby, Stills, and Nash use the line, "We are stardust." Why is this statement t
    10·2 answers
  • Calculate the molar solubility of pbi2 in the presence of 0.10 m nai.
    11·1 answer
  • The degree to which a liquid resists flowing is called _____.density viscosity conductivity malleability
    13·2 answers
  • Formula weight of H2CO3
    9·2 answers
  • Which of the following statements is true? Running an electric current through a magnet can create a magnetic field. Electric en
    8·2 answers
  • The above shows a balloon full of gas which has a volume of 120.0 mL
    9·1 answer
  • Please help! Choose one of the chemical reactions seen in the images on the last activity 1. Explain what happens in terms of en
    9·1 answer
  • NEED HELP PLEASE HURRY
    7·1 answer
  • One central them of Jesus' message was the kingdom of _______?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!