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when 7.4x1014 Hz light shines on a plate of unknown material, it is determined that the...
7. + -/1 points SerCP9 27.P.013.soln. My Notes When light of wavelength 254 nm falls on...
7. + -/1 points SerCP9 27.P.013.soln. My Notes When light of wavelength 254 nm falls on cesium, the required stopping potential is 3.00 V. If light of wavelength 436 nm is used, the stopping potential is 0.900 V. Use this information to plot a graph like that shown in the figure below. (Do this on paper. Your instructor may ask you to turn in your work.) From your graph, determine the cutoff frequency for cesium and its work function. fc...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following data: Stopping potential (V) 0.4 Frequency (THz) 560 700 780 830 1010 1210 1.3 1.7 2.4 From this data, and using Excel or an equivalent data tool, find a. the work function (in eV). b. the cutoff (threshold) wavelength for this material, c. the slope, d, an estimate of h e. What is your percent error in your h calculation? Include the Excel graph...
Fill out the tables rocedure: For each target m sodium , copper, platinum, calcium, unknown), determine...
Fill out the tables
rocedure: For each target m sodium , copper, platinum, calcium, unknown), determine the maximum wavelengin (minimum frequency) necessary for photoelectrons to be emitted. Use c tA to calculate the frequencies and find the work function. ThresholdWork Function Sample Frequency x 101" Hz 5576 10.452 11.450 (eV) 2.306 4.322 4.735 | Sodium Zinc Copper 2. Determining Planck's Constant Procedure: For each table, choose the specified target metal and find the stopping potential for 9 different wavelengths that...
Item 5 Part A Take h to have an exact value of 6.63 x 10-34 J·s...
Item 5 Part A Take h to have an exact value of 6.63 x 10-34 J·s for significant figure purposes, and use hc = 1.24 x 10eV nm (three significant figures). The work function of a material is 3.0 eV If the material is illuminated with monochromatic light(= 310nm), what is the stopping potential? Express your answer using two significant figures. IVO AZO ? Vo = V Submit Request Answer Part B What is the cutoff frequency? Express your answer...
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (A 546.1 nm) is used, a stopping potential of 0.802 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (A 686.0 nm)? V
When light shines on a potassium, the photoelectrons’ maximum speed is 3.8×105 m/s . Find the...
When light shines on a potassium, the photoelectrons’ maximum speed is 3.8×105 m/s . Find the light’s wavelength. (Work function of potassium is 2.30 eV)
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.914 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (λ = 663.0 nm)? V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.898 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (λ = 640.0 nm)? V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.934 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? ____ eV (b) What stopping potential would be observed when using light from a red lamp (λ = 656.0 nm)? ____V
Physics help! Thanks in advance! Two light sources are used in a photoelectric experiment to determine...
Physics help! Thanks in advance!
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (lambda = 546.1 nm) is used, a stopping potential of 0.686 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (lambda = 630.0 nm)?...
7. + -/1 points SerCP9 27.P.013.soln. My Notes When light of wavelength 254 nm falls on cesium, the required stopping potential is 3.00 V. If light of wavelength 436 nm is used, the stopping potential is 0.900 V. Use this information to plot a graph like that shown in the figure below. (Do this on paper. Your instructor may ask you to turn in your work.) From your graph, determine the cutoff frequency for cesium and its work function. fc...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following data: Stopping potential (V) 0.4 Frequency (THz) 560 700 780 830 1010 1210 1.3 1.7 2.4 From this data, and using Excel or an equivalent data tool, find a. the work function (in eV). b. the cutoff (threshold) wavelength for this material, c. the slope, d, an estimate of h e. What is your percent error in your h calculation? Include the Excel graph...
Fill out the tables
rocedure: For each target m sodium , copper, platinum, calcium, unknown), determine the maximum wavelengin (minimum frequency) necessary for photoelectrons to be emitted. Use c tA to calculate the frequencies and find the work function. ThresholdWork Function Sample Frequency x 101" Hz 5576 10.452 11.450 (eV) 2.306 4.322 4.735 | Sodium Zinc Copper 2. Determining Planck's Constant Procedure: For each table, choose the specified target metal and find the stopping potential for 9 different wavelengths that...
Item 5 Part A Take h to have an exact value of 6.63 x 10-34 J·s for significant figure purposes, and use hc = 1.24 x 10eV nm (three significant figures). The work function of a material is 3.0 eV If the material is illuminated with monochromatic light(= 310nm), what is the stopping potential? Express your answer using two significant figures. IVO AZO ? Vo = V Submit Request Answer Part B What is the cutoff frequency? Express your answer...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (A 546.1 nm) is used, a stopping potential of 0.802 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (A 686.0 nm)? V
Physics help! Thanks in advance!
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (lambda = 546.1 nm) is used, a stopping potential of 0.686 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (lambda = 630.0 nm)?...
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