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UY An electron microscope is using a 1.00 keV electron beam. An atom has a diameter of about 10-10 meters. 2= nm Submit Part B C

UY An electron microscope is using a 1.00 keV electron beam. An atom has a diameter of about 10-10 meters. 2= nm Submit Part B Can an individual atom theoretically be resolved using this electron microscope? View Available Hint(s) O yes no Submit Part C Suppose we replace the electron beam with a proton beam. What proton energy is needed to achieve the same resolution as the electron beam in Part A? Express your answer in electron volts to three significant digits. View Available Hint(s) IVO AED ? eV

UY An electron microscope is using a 1.00 keV electron beam. An atom has a diameter of about 10-10 meters. 2= nm Submit Part B Can an individual atom theoretically be resolved using this electron microscope? View Available Hint(s) O yes no Submit Part C Suppose we replace the electron beam with a proton beam. What proton energy is needed to achieve the same resolution as the electron beam in Part A? Express your answer in electron volts to three significant digits. View Available Hint(s) IVO AED ? eV

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The x coordinate of an electron is measured with an uncertainty of 0.200 mm. What is Vz, the x component of the electron's velocity, if the minimum percentage uncertainty in a simultaneous measurement of v, is 1.00 % ? Use the following expression for the

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Photoelectric Effect Solutions

The x coordinate of an electron is measured with an uncertainty of 0.200 mm. What is Vz, the x component of the electron's velocity, if the minimum percentage uncertainty in a simultaneous measurement of v, is 1.00 % ? Use the following expression for the uncertainty principle: AcAp. where h is Planck's constant. where Az is the uncertainty in the x coordinate of a particle, Apz is the particle's uncertainty in the x component of momentum, and ħ= Express your answer in meters per second to three significant figures. View Available Hint(s) v2 = 28.9 m/s Sub Previous Answers Correct Correct answer is shown. Your answer 28.97 m/s was either rounded differently or used a different number of significant figures than required for this part. Part B Repeat Part A for a proton. Express your answer in meters per second to three significant figures. View Available Hint(s) IVO AEO ? Uz = m/s

Part A We can estimate the number of photons in a room using the following reasoning: The intensity of the sun's rays at the earth's surface is roughly 1000 W/m? A typical room is illuminated by indirect light or by light bulbs so that its light intensity

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Photoelectric Effect Solutions

Part A We can estimate the number of photons in a room using the following reasoning: The intensity of the sun's rays at the earth's surface is roughly 1000 W/m? A typical room is illuminated by indirect light or by light bulbs so that its light intensity is some fraction of that value. Assume that on a bright day the light intensity in the room is about one-third of what it is outside. Estimate the intensity of the light that enters the room. Express your answer with the approptiate units. uả pe ? Iroom = Value Units

Express your answer in electron volts. The radii of atomic nuclei are of the order of 5.0 x 10-15 m IV AZO ? U= eV Submit Request Answer Part D Give your answer in MeV Express your answer in megaelectron volts. VASO ? U = MeV Submit Request Answer

Physics

Photoelectric Effect Solutions

Express your answer in electron volts. The radii of atomic nuclei are of the order of 5.0 x 10-15 m IV AZO ? U= eV Submit Request Answer Part D Give your answer in MeV Express your answer in megaelectron volts. VASO ? U = MeV Submit Request Answer