You are working with a team to design a better electron microscope. To precisely control the...
You are working with a team to design a better electron microscope. To precisely control the beam of electrons, your research team decides to try a magnetic field. For your study of electron control you decide to use a Cathode Ray Tube (CRT) with a magnetic field perpendicular to its axis. From your work with Helmholtz coils in the earlier problem, Measuring the Magnetic Field in Two Parallel Coils, you know that the magnetic field between these parallel coils is fairly uniform, so you decide to use them for your test. Before you can evaluate the sensitivity of the electron microscope design, you need to determine how the magnitude of a constant magnetic field affects the position of the beam spot.
What path does an electron follow while traveling through a constant magnetic field? The magnetic force is always perpendicular to the electron’s velocity. Are there any forces other than the magnetic force that need to be considered?
Determine the velocity of the electrons as they leave the electron gun in the CRT.
Determine the position, direction, and velocity of an electron entering the region of constant magnetic field. Determine the position, direction, and velocity of an electron as it leaves the region of constant magnetic field. What type of curve is the electron’s trajectory in that region?
Determine the path of the electron as it travels after it leaves the magnetic field region until it strikes the screen. Use geometry to determine how far from the center the electron strikes the screen.
Homework Answers
Add Answer to:
You are working with a team to design a better electron
microscope. To precisely control the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cm the electrons are accelerated to a speed of 1.62x107 m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103 N/C perpendicular to...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the...
A scanning electron microscope uses a uniform 15.0-kN/C electric field to accelerate electrons horizontally toward the subject to be imaged. After travelling 5.0 cmthe electrons are accelerated to a speed of 1.62x107m/s. The next step is to deflect the electrons so that they can scan across the sample—hence the scanning electron microscope. To accomplish this, the electrons are directed between a pair of oppositely charged parallel plates, which produce a uniform electric field of 6.42x103N/C perpendicular to the electron beam....
You are helping design a new electron microscope to investigate the structure of the HIV virus....
You are helping design a new electron microscope to investigate the structure of the HIV virus. A new device to position the electron beam consists of a charged conducting ring with a gap - i.e. an incomplete ring - as shown in the figure below. The electron beam will pass through the center of the ring traveling perpendicular to the ring (into the page here). To complete the design, your job is to calculate the electric field in the center...
Early black-and-white television sets used an electron beam to draw a picture on the screen. The...
Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were accelerated by a voltage of 3.0 kV; the beam was then steered to different points on the screen by coils of wire that produced a magnetic field of up to 0.61 T . 1. What acceleration do they experience due to the magnetic field, assuming that it is perpendicular to their path? What is this acceleration in units of...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical constants. From the set-up demonstrated in class, we are able to find a monumental combination of two physical constants-the charge of an electron (e) and the mass of an electron (m). Since the charge of an electron (e) is well known through other experiments, we will use the ratio of charge to mass to find the mass of an...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical constants. From the set-up demonstrated in class, we are able to find a monumental combination of two physical constants-the charge of an electron (e) and the mass of an electron (m). Since the charge of an electron (e) is well known through other experiments, we will use the ratio of charge to mass to find the mass of an...
Early black-and-white television sets used an electron beam to draw a picture on the screen. The...
Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were accelerated by a voltage of 3.0 kV; the beam was then steered to different points on the screen by coils of wire that produced a magnetic field of up to 0.66 T . A. What is the speed of electrons in the beam? Express your answer with the appropriate units. v= __________ B. What acceleration do they experience due...
In an electron microscope, there is an electron gun that contains two charged metallic plates 3.15...
In an electron microscope, there is an electron gun that contains two charged metallic plates 3.15 cm apart. An electric force accelerates each electron in the beam from rest to 8.20% of the speed of light over this distance. (Ignore the effects of relativity in your calculations.) (a) Determine the kinetic energy of the electron as it leaves the electron gun. Electrons carry this energy to a phosphorescent viewing screen where the microscope's image is formed, making it glow. ______________J...
PART A: An electron moves at 3.00×106 m/s through a region in which there is a...
PART A: An electron moves at 3.00×106 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.50×10−2 T . A1: An electron moves at 3.00×106 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.50×10−2 T . A2: What is the smallest possible magnitude of the force on the electron due to the magnetic field? Express your answer in newtons to the nearest integer. A3: If...
As shown in the figure, an electron is fired with a speed of 3.73 x 10...
As shown in the figure, an electron is fired with a speed of 3.73 x 10 m/s through a hole in one of the two parallel plates and into the region between the plates separated by a distance of 0.24 m. There is a magnetic field in the region between the plates and, as shown, it is directed into the plane of the page (perpendicular to the velocity of the electron). Determine the magnitude of the magnetic field so that...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical constants. From the set-up demonstrated in class, we are able to find a monumental combination of two physical constants-the charge of an electron (e) and the mass of an electron (m). Since the charge of an electron (e) is well known through other experiments, we will use the ratio of charge to mass to find the mass of an...
Finding the charge to mass (e/m) ratio of the electron Often in physics, we look for ways to find fundamental physical constants. From the set-up demonstrated in class, we are able to find a monumental combination of two physical constants-the charge of an electron (e) and the mass of an electron (m). Since the charge of an electron (e) is well known through other experiments, we will use the ratio of charge to mass to find the mass of an...
As shown in the figure, an electron is fired with a speed of 3.73 x 10 m/s through a hole in one of the two parallel plates and into the region between the plates separated by a distance of 0.24 m. There is a magnetic field in the region between the plates and, as shown, it is directed into the plane of the page (perpendicular to the velocity of the electron). Determine the magnitude of the magnetic field so that...
Most questions answered within 3 hours.
-
Jamie is doing a survey at her school about whether the students
feel the cafeteria food...
asked 1 hour ago -
How many liters of 0.669 M KOH will be needed to raise the pH of
0.339...
asked 3 hours ago -
A liquid of density 1270 kg/m 3 flows steadily through a pipe of
varying diameter and...
asked 3 hours ago -
Questions: What should the American executive do?
'A visiting American executive finds that a foreign subsidiary...
asked 3 hours ago -
Activity based costing was introduced as an alternative to
absorption costing.
1. Discuss using illustration the...
asked 3 hours ago -
1. You own shares of Crane DVD Company and are interested in
selling them. With so...
asked 3 hours ago -
How many grams of He are necessary to fill a balloon having a
volume of 4.5E3...
asked 3 hours ago -
The 2 patients, still in the hospital, were interviewed by a
MoH epidemiologist. The interviews revealed...
asked 3 hours ago -
An uncharged capacitor and a resistor are connected in series to
a source of emf. If...
asked 4 hours ago -
If assets are $540,000 and liabilities are $236,000 what is the
amount of owner’s equity?
asked 4 hours ago -
MATH 3421 Maple Assignment 1 Due February 13, 2019 Maple is a
Computer Algebra System that...
asked 4 hours ago -
CODING IN JAVA
Dates are printed in several common formats. Two of the more
common formats...
asked 4 hours ago