Electrostatic precipitators use electric forces to remove pollutant particles from smoke, in particular in the smokestacks of coal-burning power plants. One form of precipitator consists of a vertical, hollow, metal cylinder with a thin wire, insulated from the cylinder, running along its axis. A large potential difference is established between the wire and the outer cylinder, with the wire at the lower potential. This sets up a strong radial electric field directed inward. The field produces a region of ionized air near the wire. Smoke enters the precipitator at the bottom, ash and dust in it pick up electrons, and the charged pollutants are accelerated toward the outer cylinder wall by the electric field. Suppose the radius of the central wire is 90.0 µm, the radius of the cylinder is 12.5 cm, and a potential difference of 59.00 kV is established between the wire and the cylinder.
(a) What is the magnitude of the electric field midway between
the wire and the cylinder wall?
(b) What magnitude of charge must a 30.0 µg ash particle have if
the electric field computed in part (a) is to exert a force ten
times the weight of the particle?
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Electrostatic precipitators use electric forces to remove
pollutant particles from smoke, in particular in the smokestacks...
.. Electrostatic precipitators use electric forces to remove pollutant particles from smoke, in particular in the...
.. Electrostatic precipitators use electric forces to remove
pollutant particles from smoke, in particular in the smokestacks of
coal-burning power plants. One form of pre- cipitator consists of a
vertical, hollow, metal cylinder with a thin wire, insulated from
the cylinder, running along its axis (Fig. P23.67). A large
potential difference is established between the wire and the outer
cylinder, with the wire at lower potential. This sets up a strong
radial electric field directed inward. The field produces a...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large amount of pollution in the form of small particles (soot). Scrubbers use a two steps process: electrons are first added to the soot particle, and an electric force then pulls the particle out of the smoke stream collector soot Consider a soot particle of mass msoot 1.1 nanograms (1.1e-12 kg), which corresponds to a diameter of a few micrometers. Some number of electrons have...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large amount of pollution in the form of small particles (soot). Scrubbers use a two steps process: electrons are first added to the soot particle, and an electric force then pulls the particle out of the smoke stream. Acollectorsoo Consider a soot particle of mass msoot 1 nanograms (1e-12 kg), which corresponds to a diameter of a few micrometers. Some number of electrons have been...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
1. Parallel plates. You have two equal but oppositely charged parallel conducting plates, separated by 10...
1. Parallel plates. You have two equal but oppositely charged parallel conducting plates, separated by 10 cm. A voltmeter shows that the potential difference between the plates is 500 V. (a) Which is at a higher potential, the positive or negative plate? (b) How big is the electric field between the plates? (c) You let go of an electron next to the negative plate. How much work does the electric field do in moving the electron to the positive plate?...
Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determin...
Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determine the electric field vector E(r) in the region between the conductors (acrcb) and the potential difference Vab between them. b) Calculate E(r) and Vab if the two conductors have a 30 mm, b-40 mm, q 10uc, r-35 mm ε,-8.85x10-12C3(N.m2. For the circuit shown in Figure 2 find: a) the...
PLEASE HELP ME AND SHOW STEPS. THANK YOU 1) It is desined to step up a...
PLEASE HELP ME AND SHOW STEPS. THANK YOU
1) It is desined to step up a vollage of 120 V to 96,000 v. The turns ratio N/N, of the transformer a) I/28 b) (64 x 10y )28 d) 8001 if the voltage is stepped that power is not lost in an ideal transformer, consider the situation in the above question. 2) Starting from the idea t up 800 times, the current is a) the same, since power is the same...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
Note: This test contains ten questions from chapter 19 to chapter 27. For full credit, you...
Note: This test contains ten questions from chapter 19 to chapter 27. For full credit, you should show all the steps of your numerical answers. No credit would be earned for just circling the right answers. Chapter 19 - Electric Potential and Electric Potential Energy 1. Two point charges are of + 7 uC and - 4 C are held at the corners of a rectangle as shown. The lengths of the sides of rectangle are 0.15 m, and 0.05...
.. Electrostatic precipitators use electric forces to remove
pollutant particles from smoke, in particular in the smokestacks of
coal-burning power plants. One form of pre- cipitator consists of a
vertical, hollow, metal cylinder with a thin wire, insulated from
the cylinder, running along its axis (Fig. P23.67). A large
potential difference is established between the wire and the outer
cylinder, with the wire at lower potential. This sets up a strong
radial electric field directed inward. The field produces a...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large amount of pollution in the form of small particles (soot). Scrubbers use a two steps process: electrons are first added to the soot particle, and an electric force then pulls the particle out of the smoke stream collector soot Consider a soot particle of mass msoot 1.1 nanograms (1.1e-12 kg), which corresponds to a diameter of a few micrometers. Some number of electrons have...
Using Coulomb's Law to Clean the Air Modern smokestacks use devices called scrubbers to remove large amount of pollution in the form of small particles (soot). Scrubbers use a two steps process: electrons are first added to the soot particle, and an electric force then pulls the particle out of the smoke stream. Acollectorsoo Consider a soot particle of mass msoot 1 nanograms (1e-12 kg), which corresponds to a diameter of a few micrometers. Some number of electrons have been...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
1. Parallel plates. You have two equal but oppositely charged parallel conducting plates, separated by 10 cm. A voltmeter shows that the potential difference between the plates is 500 V. (a) Which is at a higher potential, the positive or negative plate? (b) How big is the electric field between the plates? (c) You let go of an electron next to the negative plate. How much work does the electric field do in moving the electron to the positive plate?...
Problem1 In the concentric spherical conductors system shown in Figure 1, the inner conductor has positive charge-q and radius a. The outer conductor has radius b a) Using Gauss' Law determine the electric field vector E(r) in the region between the conductors (acrcb) and the potential difference Vab between them. b) Calculate E(r) and Vab if the two conductors have a 30 mm, b-40 mm, q 10uc, r-35 mm ε,-8.85x10-12C3(N.m2. For the circuit shown in Figure 2 find: a) the...
PLEASE HELP ME AND SHOW STEPS. THANK YOU
1) It is desined to step up a vollage of 120 V to 96,000 v. The turns ratio N/N, of the transformer a) I/28 b) (64 x 10y )28 d) 8001 if the voltage is stepped that power is not lost in an ideal transformer, consider the situation in the above question. 2) Starting from the idea t up 800 times, the current is a) the same, since power is the same...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
Note: This test contains ten questions from chapter 19 to chapter 27. For full credit, you should show all the steps of your numerical answers. No credit would be earned for just circling the right answers. Chapter 19 - Electric Potential and Electric Potential Energy 1. Two point charges are of + 7 uC and - 4 C are held at the corners of a rectangle as shown. The lengths of the sides of rectangle are 0.15 m, and 0.05...
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