1 Temperature And Heat 2 The Kinetic Theory Of Gases 3 The First Law Of Thermodynamics 4 The Second Law Of Thermodynamics 5 Electric Charges And Fields 6 Gauss's Law 7 Electric Potential 8 Capacitance 9 Current And Resistance 10 Direct-current Circuits 11 Magnetic Forces And Fields 12 Sources Of Magnetic Fields 13 Electromagnetic Induction 14 Inductance 15 Alternating-current Circuits 16 Electromagnetic Waves Chapter7: Electric Potential
Chapter Questions Section: Chapter Questions
Problem 7.1CYU: Check Your Understanding If Q has a mass of 4.00 g , what is the speed of Q at r2 ? Problem 7.2CYU: Check Your Understanding What is the potential energy of Q relative to the zero reference at... Problem 7.3CYU: Check Your Understanding Is the electrical potential energy of two point charges positive or... Problem 7.4CYU: Check Your Understanding How much energy does a 1.5-V AAA battery have that can move 100C ? Problem 7.5CYU: Check Your Understanding How many electrons would go through a 24.0-W lamp? Problem 7.6CYU: Check Your Understanding How would this example change with a positron? A positron is identical to... Problem 7.7CYU: Check Your Understanding From the examples, how does the energy of a lightning strike vary with the... Problem 7.8CYU: Check Your Understanding What is the potential inside the metal sphere in Example 7.10? Problem 7.9CYU: Check Your Understanding What is the potential on the x-axis? The z-axis? Problem 7.10CYU: Check Your Understanding What is the potential on the axis of a nonuniform ring of charge, where the... Problem 7.11CYU: Check Your Understanding Which coordinate system would you use to calculate the electric field of a... Problem 7.12CYU: Check Your Understanding What are the equipotential surfaces for an infinite line charge? Problem 1CQ: Would electric potential energy be meaningful if the electric field were not conservative? Problem 2CQ: Why do we need to be careful about work done on the system versus work done by the system in... Problem 3CQ: Does the order in which we assemble a system of point charges affect the total work done? Problem 4CQ: Discuss how potential difference and electric field strength are related. Give an example. Problem 5CQ: What is die strength of the electric field in a region where the electric potential is constant? Problem 6CQ: If a proton is released from rest in an electric field, will it move in the direction of increasing... Problem 7CQ: Voltage is the common word for potential difference. Which term is more descriptive, voltage or... Problem 8CQ: If the voltage between two points is zero can a test charge be moved between them with zero net work... Problem 9CQ: Wliat is the relationship between voltage and energy? More precisely, what is the relationship... Problem 10CQ: Voltages are always measured between two points Why? Problem 11CQ: How are units of volts and electron-volts related? How do they differ? Problem 12CQ: Can a particle move in a direction of increasing electric potential, yet have its electric potential... Problem 13CQ: Compare the electric dipole moments of charges +Q separated by a distance d and charges +Q/2... Problem 14CQ: Would Gauss’s law be helpful for determining the electric field of a dipole? Why? Problem 15CQ: In what region of space is the potential due to a uniformly charged sphere the same as that of a... Problem 16CQ: Can the potential of a nonuniformly charged sphere be the same as that of a point charge? Explain. Problem 17CQ: If the electric field is zero throughout a region, must the electric potential also be zero in that... Problem 18CQ: Explain why knowledge of E(x, y, z) is not sufficient to determine V(x,y,z). What about the other... Problem 19CQ: If two points are at the same potential, are there any electric field lines connecting them? Problem 20CQ: Suppose you have a map of equipotential surfaces spaced 1.0 V apart. What do die distances between... Problem 21CQ: Is the electric potential necessarily constant over the surface of a conductor? Problem 22CQ: Linder electrostatic conditions, the excess charge on a conductor resides on its surface. Does this... Problem 23CQ: - Can a positively charged conductor be at a negative potential? Explain. Problem 24CQ: Can equipotential surfaces intersect? Problem 25CQ: Why are the metal support rods for satellite network dishes generally grounded? Problem 26CQ: (a) Why are fish reasonably safe in an electrical storm? (b) Why are swimmers nonetheless ordered to... Problem 27CQ: What are the similarities and differences between the processes in a photocopier and an... Problem 28CQ: About what magnitude of potential is used to charge the drum of a photocopy machine? A web search... Problem 29P: Consider a charge Q1(1+5.0C) fixed at a site with another charge Q2 (Charge +3.0C , mass 6.0g )... Problem 30P: Two charges Q1(1+2.00C) and Q2(+2.00C are placed symmetrically along the x-axis at x=3.00cm .... Problem 31P: To form a hydrogen atom, a proton is fixed at a point and an electron is brought from far away to a... Problem 32P: (a) What is the average power output of a heart defibrillator that dissipates 400 J of energy in... Problem 33P: Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra election)... Problem 34P: An evacuated tube uses an accelerating voltage of 40 kV to accelerate electrons to hit a copper... Problem 35P: Show that units of V/m and N/C for electric field strength are indeed equivalent. Problem 36P: What is the strength of the electric field between two parallel conducting plates separated by 1.00... Problem 37P: The electric field strength between two parallel conducting plates separated by 4.00 cm is 7.50104... Problem 38P: The voltage across a membrane forming a cell wall is 80.0 mV and the membrane is 9.00 nm thick. What... Problem 39P: Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero... Problem 40P: Find the maximum potential difference between two parallel conducting plates separated by 0.500 cm... Problem 41P: An electron is to be accelerated in a uniform electric field having a strength of 2.00106 V/m. (a)... Problem 42P: Use die definition of potential difference in terms of electric field to deduce die formula for... Problem 43P: The electric field in a region is pointed away from the z-axis and the magnitude depends upon the... Problem 44P: Singly charged gas ions are accelerated from rest through a voltage of 13.0 V. At what temperature... Problem 45P: A 0.500-cm-diameter plastic sphere, used in a static electricity demonstration, has a uniformly... Problem 46P: How far from a 1.00C point charge is the potential 100 V? At what distance is it 2.00102V ? Problem 47P: If the potential due to a point charge is 5.00102 V at a distance of 15.0 m, what are the sign and... Problem 48P: In nuclear fission, a nucleus splits roughly in half, (a) What is the potential 2.001014 in from a... Problem 49P: A research Vail de Graaff generator has a 2.00-m- diameter metal sphere with a charge of 5.00 mC on... Problem 50P: An electrostatic paint sprayer has a 0.200-m-diameter metal sphere at a potential of 25.0 kV that... Problem 51P: (a) What is the potential between two points situated 10 cm and 20 cm from a 3.0C point charge? (b)... Problem 52P: Find the potential at points P1,P2,andP4 in the diagram due to the two given charges. Problem 53P: Two charges 20Cand+2.0C are separated by 4.0 cm on the z-axis symmetrically about origin, with the... Problem 54P: (a) Plot the potential of a uniformly charged 1-m rod with 1 C/m charge as a function of the... Problem 55P: Throughout a region, equipotential surfaces are given by z = constant. The surfaces are equally... Problem 56P: In a particular region, the electric potential is given by V=xy2z+4xy . What is the electric field... Problem 57P: Calculate the electric field of an infinite line charge, throughout space. Problem 58P: Two very large metal plates are placed 2.0 cm apart, with a potential difference of 12 V between... Problem 59P: A very large sheet of insulating material has had an excess of electrons placed on it to a surface... Problem 60P: A metallic sphere of radius 2.0 cm is charged with +5.0C charge, which spreads on the surface of the... Problem 61P: Two large charged plates of charge density 30C/m2 face each other at a separation of 5.0 mm. (a)... Problem 62P: A long cylinder of aluminum of radius R meters is charged so that it has a uniform charge per unit... Problem 63P: Two parallel plates 10 cm on a side are given equal and opposite charges of magnitude 5.0109 C. The... Problem 64P: The surface charge density on a long straight metallic pipe is . What is the electric potential... Problem 65P: Concentric conducting spherical shells carry charges Q and -Q, respectively. The inner shell has... Problem 66P: Shown below are two concentric spherical shells of negligible thicknesses and radii R1and R2The... Problem 67P: A solid cylindrical conductor of radius a is surrounded by a concentric cylindrical shell of inner... Problem 68P: (a) What is the electric field 5.00 m from die center of the terminal of a Van de Graaff with a... Problem 69P: (a) What is the direction and magnitude of an electric field that supports the weight of a free... Problem 70P: A simple and common technique for accelerating electrons is shown in Figure 7.46, where there is a... Problem 71P: In a Geiger counter, a thin metallic wire at the center of a metallic tube is kept at a high voltage... Problem 72P: The practical limit to all electric field in air is about 3.00106 N/C. Above this strength, sparking... Problem 73P: To form a helium atom, an alpha particle that contains two protons and two neutrons is fixed at one... Problem 74P: Find the electrostatic energy of eight equal charges (+3C) each fixed at the corners of a cube of... Problem 75P: The probability of fusion occurring is greatly enhanced when appropriate nuclei are brought close... Problem 76P: A bare helium nucleus has two positive charges and a mass of 6.641027kg . (a) Calculate its kinetic... Problem 77P: An election enters a region between two large parallel plates made of aluminum separated by a... Problem 78P: How far apart are two conducting plates that have an electric field strength of 4.50103 V/m between... Problem 79P: (a) Will the electric field strength between two parallel conducting plates exceed the breakdown... Problem 80P: Membrane walls of living cells have surprisingly large electric fields across them due to separation... Problem 81P: A double charged ion is accelerated to an energy of 32.0 keV by the electric field between two... Problem 82P: The temperature near the center of the Sun is thought to be 15 million degrees Celsius ( 1.5107oC )... Problem 83P: A lightning bolt strikes a tree, moving 20.0 C of charge through a potential difference of 1.00102... Problem 84P: What is the potential 0.5301010 m from a proton (the average distance between the proton and... Problem 85P: (a) A sphere has a surface uniformly charged with 1.00 C. At what distance from its center is the... Problem 86P: What are the sign and magnitude of a point charge that produces a potential of —2.00 V at a distance... Problem 87P: In one of the classic nuclear physics experiments at the beginning of the twentieth century, an... Problem 88AP: A 12.0-V battery-operated bottle warmer heats 50.0 g of glass, 2.50102 g of baby formula, and... Problem 89AP: A battery-operated car uses a 12.0-V system. Find the charge the batteries must be able to move in... Problem 90AP: (a) Find the voltage near a 10.0 cm diameter metal sphere that has 8.00 C of excess positive charge... Problem 91AP: A uniformly charged ring of radius 10 cm is placed on a nonconducting table. It is found that 3.0 cm... Problem 92AP: A glass ring of radius 5.0 cm is painted with a charged paint such that the charge density around... Problem 93AP: A CD disk of radius (R = 3.0 cm) is sprayed with a charged paint so that the charge varies... Problem 94AP: (a) What is the final speed of an electron accelerated from rest through a voltage of 25.0 MV by a... Problem 95AP: A large metal plate is charged uniformly to a density of a=2.0109C/m2 . How far apart are the... Problem 96AP: Your friend gets really excited by the idea of making a lightning rod or maybe just a sparking toy... Problem 97AP: (a) Find x L limit of the potential of a finite uniformly charged rod and show that it coincides... Problem 98AP: A small spherical pith ball of radius 0.50 cm is painted with a silver paint and then -10 C of... Problem 99AP: Two parallel conducting plates, each of cross-sectional area 400 cm2, are 2.0 cm apart and... Problem 100AP: A point charge of q=50108 C is placed at the center of an uncharged spherical conducting shell of... Problem 101AP: Earth has a net charge that produces an electric field of approximately 150 N/C downward at its... Problem 102AP: Point charges of 25.0/ C and 45. C are placed 0.500 m apart. At what point along die line between... Problem 103AP: What can you say about two charges q1and q2 if the electric field one-fourth of the way from q1to q2... Problem 104AP: Calculate the angular velocity of an electron orbiting a proton in the hydrogen atom, given the... Problem 105AP: An electron has an initial velocity of 5.00106m/s in a uniform 2.0010m/s electric field. The field... Problem 106CP: Three Na+ and three Cl ions are placed alternately and equally spaced around a circle of radius 50... Problem 107CP: Look up (presumably online, or by dismantling an old device and making measurements) the magnitude... Problem 108CP: Use the electric field of a finite sphere with constant volume charge density to calculate the... Problem 109CP: Calculate the electric field of a dipole throughout space from the potential. Problem 104AP: Calculate the angular velocity of an electron orbiting a proton in the hydrogen atom, given the...
Related questions
Calculate the angular velocity ω of an electron orbiting a proton in an atom, assuming the radius of the orbit is 5.02×10^-11 m. You may assume that the proton is stationary and the centripetal force is supplied by Coulomb attraction.
Definition Definition Rate of change of angular displacement. Angular velocity indicates how fast an object is rotating. It is a vector quantity and has both magnitude and direction. The magnitude of angular velocity is represented by the length of the vector and the direction of angular velocity is represented by the right-hand thumb rule. It is generally represented by ω.
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