As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set up a measurement in which a roton and an electron are situated 865 nm from each other and you study the forces that the particles exert on each other. As Expected, the predictions of Coulomb's law are well confirmed. You find that the forces are repulsive. attractive. You also find the magnitude of each force. magnitude of each force: N

As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set up a measurement in which a roton and an electron are situated 865 nm from each other and you study the forces that the particles exert on each other. As Expected, the predictions of Coulomb's law are well confirmed. You find that the forces are repulsive. attractive. You also find the magnitude of each force. magnitude of each force: N

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter30: Atomic Physics

Section: Chapter Questions

Problem 2PE: (a) Calculate the mass of a proton using the charge-to-mass ratio given for it in this chapter and...

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A simple and common technique for accelerating electrons is shown in the figure, which depicts a uniform electric field between two plates. Electrons are released, usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to pass through.Randomized VariablesE = 2.7 × 104 N/C Calculate the horizontal component of the electron's acceleration if the field strength is 2.7 × 104 N/C. Express your answer in meters per second squared, and assume the electric field is pointing in the negative x-direction as shown in the figure.
Problem 3: A simple and common technique for accelerating electrons is shown in the figure, which depicts a uniform electric field between two plates. Electrons are released, usually from a hot filament, near the negative plate, and there is a small hole in the positive plate that allows the electrons to pass through. Randomized Variables E = 2.45 x 104 N/C > A Calculate the horizontal component of the electron's acceleration if the field strength is 2.45 x 104 N/C. Express your answer in meters per second squared, and assume the electric field is pointing in the negative x-direction as shown in the figure.
An electron with a kinetic energy of 1 keV is fired normal to the lines of a field of magnitude 70 G. Find: a) the radius of its path: 28.7*10^-9 m b) its acceleration: 4.35*10^10 m/s2 c) its period: 5.1*10^-9 S
#3. In Millikan oil drop experiment, a negatively charged oil droplet of mass 3 x 10-12 g and charge 1.6 x 10-16C is kept suspended within the chamber. (a) Sketch a diagram to show the electric field and different forces working on the oil droplet. (b) Calculate the minimum electric field required in order to keep it suspended inside the chamber. (c) What is the electric field required to move the charge vertically downward at an acceleration of 5 cm/s2 ?
# 3. In Millikan oil drop experiment, a negatively charged oil droplet of mass 3 x 10-12 g and charge 1.6 x 10-16C is kept suspended within the chamber. (a) Sketch a diagram to show the electric field and different forces working on the oil droplet. (b) Calculate the minimum electric field required in order to keep it suspended inside the chamber. (c) What is the electric field required to move the charge vertically downward at an acceleration of 5 cm/s? ?
-1.91 x 10°m/sj while sepa- (3) Two protons are initially both traveling with velocity o = rated by a distance of 54.8 fm. While these protons interact, they will begin to move away from one another and end up infinitely far away from one another. (a) Draw a picture of the protons in their initial state. Label the separation and the velocity on the image. Be sure to include a labeled set of axes. (b) What is the closest separation between these protons during their motion? (c) When the protons are infinitely far apart, one will have a speed which is 4.53 times larger than the other proton. What are the final velocities of these protons? (d) Draw a picture of the protons in their final state. Use the same orientation of axes from part (a). Label the velocities on the image.
Cold Atoms: When atoms are cooled to very low temperatures, they move very slowly. At these low speeds, atoms can fall under their own weight. A team of scientists is studying cold ions. Each ion has a mass of 1.91 x 10-25 kg, a charge of 1.6 x 10-19 C, and an average velocity of 15.0 mm/s due north. The scientists are trying to focus a beam of these atoms on a detector 1.000 m away. However, gravity is deflecting the beam. One scientist suggests using a magnetic field to counteract the force of gravity. (a) What minimum magnetic field strength could counteract the force of gravity for these particles? (b) What direction should the field be oriented? Either describe the direction or draw a picture that shows the velocity of the particles, the direction of gravity, and the direction of the magnetic field. Ignore the earth's magnetic field. It has eliminated by magnetic shielding around the experimental setup.
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Question 1 a) In J. J. Thomson experiment (1897), an electron moving horizontally with a constant speed vo enters in between the horizontal plates of a capacitor. The electric field strength between the plates of length L and distance d, is E. The vertical deviation of the electron at the moment of exit from the field region is measured to be Y. Derive the expression giving the electron's charge to mass ratio, i.e. e/m to be 2v,Y/CEL). (Recall that Thomson received Nobel Prize for his achievement.) b) Calculate e/m, knowing the following data. E=1.6x10* Newton/Coulomb, L=10 cm, Y=2.9 cm, v=2.19x10* km/s. (Be careful to use coherent units.)
1.00g of hydrogen contains 6.02x10^23 atoms, each with one electron and one proton. Suppose that 1.00g of hydrogen is separated into protons and electrons, that the protons are placed at Earth's north pole, and that electrons are placed at Earth's south pole. Find the magnitude of the resulting compressional force on Earth. (The radius of Earth is approximately 6.38x10^6 m). * 5.12x10^5 N 4.23x10^5 N 6.43x10^6 N 6.87x10^6 N None of the Above
1.00g of hydrogen contains 6.02x10^23 atoms, each with one electron and one proton. Suppose that 1.00g of hydrogen is separated into protons and electrons, that the protons are placed at Earth's north pole, and that electrons are placed at Earth's south pole. Find the magnitude of the resulting compressional force on Earth. (The radius of Earth is approximately 6.38x10^6 m).
QUESTION 32 In a version of Millikan's experiment, an oil droplet is released and when it has travelled a distance d1, the electric field is switched on with a magnitude such that at distance dɔ the droplet velocity has been reduced to zero. Calculate the charge on the droplet. Give you answer in equivalent charge of how many electrons. Distance d1: 0.07 m Distance between plates: 0 1 m Distance d2 - d1: 0.012m mass of droplet 3.65x10 16 Kg Voltage difference: 332.1037138 10 'n 本 Click Save amd Submit to save and submit. Click Save All Answers to save all answers. 6°C Clou O1