Potassium and gold cathodes are used in a photoelectric-effect experiment. For each cathode, find: Part G The stopping potential in volts for potassium if the wavelength is 210 nm. 1. The threshold frequency. 2. The threshold wavelength. 3. The maximum electron ejection speed Express your answer in volts. if the light has a wavelength of 210 nm 4. The stopping potential if the wavelength is 210 nm. Vstoppotassium 3.34 %3D Throughout this problem, be sure to use 6.63 x 10-34 J.s for Planck's constant. Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Part H The stopping potential in volts for gold if the wavelength is 210 nm. Express your answer in volts. V Vstopgold =
Potassium and gold cathodes are used in a photoelectric-effect experiment. For each cathode, find: Part G The stopping potential in volts for potassium if the wavelength is 210 nm. 1. The threshold frequency. 2. The threshold wavelength. 3. The maximum electron ejection speed Express your answer in volts. if the light has a wavelength of 210 nm 4. The stopping potential if the wavelength is 210 nm. Vstoppotassium 3.34 %3D Throughout this problem, be sure to use 6.63 x 10-34 J.s for Planck's constant. Submit Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Part H The stopping potential in volts for gold if the wavelength is 210 nm. Express your answer in volts. V Vstopgold =
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Question
The threshold frequency of potassium is 5.55x10^14 Hz.
The threshold frequency of gold is 1.23x10^15 Hz.
The threshold wavelength of potassium is 540nm.
The threshold wavelength of gold is 244nm.
Please answer parts F, G, and H
Transcribed Image Text:Review I Constants I Periodic Table
Potassium and gold cathodes are used in a
photoelectric-effect experiment. For each cathode,
Part G
find:
The stopping potential in volts for potassium if the wavelength is 210 nm .
1. The threshold frequency.
2. The threshold wavelength.
3. The maximum electron ejection speed
if the light has a wavelength of 210
Express your answer in volts.
ΑΣφ
nm .
4. The stopping potential if the
wavelength is 210 nm .
V stoppotassium
3.34
V
%D
Throughout this problem, be sure to use
6.63 x 10-34 J.s for Planck's constant.
Submit
Previous Answers Request Answer
X Incorrect; Try Again; One attempt remaining
Part H
The stopping potential in volts for gold if the wavelength is 210 nm .
Express your answer in volts.
ΑΣφ
V
V stop gold
%3D
Transcribed Image Text:I Review I Constants I Periodic Table
Potassium and gold cathodes are used in a
photoelectric-effect experiment. For each cathode,
find:
The maximum photoelectron ejection speed in meters per second for an electron ejected from potassium if the light has a
wavelength of 210 nm .
Express your answer in meters per second.
1. The threshold frequency.
2. The threshold wavelength.
3. The maximum electron ejection speed
if the light has a wavelength of 210
Omax potassium = 1.1x106 m/s
%3D
nm .
Submit
Previous Answers
4. The stopping potential if the
wavelength is 210 nm.
V Correct
Throughout this problem, be sure to use
6.63 x 10 34 J.s for Planck's constant.
-34
Part F
The maximum photoelectron ejection speed in meters per second for an electron ejected from gold if the light has a
wavelength of 210 nm .
Express your answer in meters per second.
ΑΣφ
?
xª
Xb
b.
X•10"
m/s
Umax gold
II
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