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Predict/Calculate Aluminum and calcium have photoelectric work functions of $W_{\mathrm{M}}=4.08 \mathrm{eV}$ and $W_{\mathrm{Ca}}=2.87 \mathrm{eV},$ respectively. (a) Which metal requires higher-frequency light to produce photoelectrons? Explain. (b) Calculate the minimum frequency thatwill produce photoelectrons from each surface.

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Physics 103

Chapter 30

Quantum Physics

University of Michigan - Ann Arbor

Simon Fraser University

McMaster University

Lectures

02:51

In physics, wave optics is…

10:02

Interference is a phenomen…

04:52

Predict/Calculate Zinc and…

03:57

Predict/Calculate When lig…

03:55

Predict/Calculate Two beam…

03:45

$\bullet$ The photoelectri…

06:51

The photoelectric work fun…

Light of wavelength 430 nm…

03:11

05:10

Predict/Calculate Platinum…

07:41

U Ultraviolet light with a…

06:13

Monochromatic ultraviolet …

pork function over the moon. IAM equals work function off ammonium equals 4.4 point 08 electron volts four points It Electron Boggs equal 4.8 multiplied by 1.6, multiplied by 10 to the power minus 19 Jules. And this gives US 6.5. Multiply by 10 to the power minus 19. Jules minus 19 Jules. Also work function off cadmium equals 2.872 point 87 electron votes and 2.87 electron walks is equal to 4.7, multiplied by 10 to the power minus 19 tools minus 19. Jules, Now let's to party. Ammonium requires higher frequency light to produce photo electrons. Oh well, ammonium has a large real work function, which means the electrons off ammonium need more energy to break off. So electrons off ammonium electrons. Oh, ammonium, ammonium meat, more energy, more energy, um, to break off to break off because it is larger work function. And no, let's do part B work function or of ammonium equals. It's f on dhe. This imply state equals work. Function for ammonium is a 6.5 multiplied by 10 to the power minus 19 divided by ah planks Constant, which is 6.63 Multiply by 10 to the power minus 34. And this gives us um 9.89 point eight, multiplied by 10 to the power 14 hurts 14 hearts also work. Function off cadmium equals hmm and F equals ah, work function off cadmium 4.6 Multiply by 10 to the power minus 19 Divided by planks constant 6.63 Multiply by 10 to the power minus 34 this gives us 6.9 multiply by 10 to the power 14 hers 14 heart.

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In physics, wave optics is the study of the behavior of light, or other elec…

Interference is a phenomenon in which two waves superpose to form a resultan…

Predict/Calculate Zinc and cadmium have photoelectric work functions given b…

Predict/Calculate When light with a wavelength of 545 $\mathrm{nm}$ shines o…

Predict/Calculate Two beams of light with different wavelengths $\left(\lamb…

$\bullet$ The photoelectric threshold wavelength of a tungsten surface is 27…

The photoelectric work functions for particular samples of certain metals ar…

Light of wavelength 430 nm strikes a metal surface, releasing electrons with…

Predict/Calculate Platinum has a work function of 6.35 $\mathrm{eV}$ and iro…

U Ultraviolet light with a single wavelength and with intensity 550 $\mathrm…

Monochromatic ultraviolet light with intensity 550 $\mathrm{W} / \mathrm{m}^…

04:34

Predict/Calculate Halogen Lightbulbs Halogen lightbulbs allow their filament…

02:28

Diffraction effects become significant when the width of an aperture is comp…

02:41

A person with a near-point distance of 25 $\mathrm{cm}$ finds that a magnify…

04:28

Laser Cooling Lasers can cool a group of atoms by slowing them down, because…

02:06

CE Predict/Explain (a) In principle, do your eyes have greaterresolution…

01:58

The diameter of a collimated laser beam can be expanded orreduced by usi…

02:21

CE Predict/Explain Consider a nucleus that undergoes $\alpha$ decay. (a) Is …

03:19

(a) If you treat a $10 \times$ eyepiece of a microscope as a magnifyingg…

00:34

Blowily Flight The coils used to measure the movements of a blowfly, as desc…

12:05

Predict/Calculate An electron in hydrogen absorbs a photon and jumps to a hi…

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