Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Textbook Question
Chapter 23, Problem 28P
(II) Point a is 26 cm north of a –3.8 μC point charge, and point b is 36 cm west of the charge (Fig. 23–27). Determine (a) Vb – Va and (b)
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(II) Point a is 62 cm north of a –3.8 µC point charge, and
point b is 88 cm west of the charge (Fig. 17–40). Determine
(a) Vý – Va and (b) Ep – Ea (magnitude and direction).
62 cm
FIGURE 17-40 b
Q =-3.8 µC
Problem 27.
88 cm
(II) Determine the electric field É at the origin 0 in
Fig. 16–58 due to the two charges
at A and B.
y
|+26 µC
A
8.0 cm
-26 µC
B
8.0 cm
FIGURE 16-58
8.0 cm
Problem 33.
2%. (II) Point a is 62 cm north of a -3.8 uC poini charge, atld
point b is 88 cm west of the charge (Fig. 17-40). Determine
(a) ½ - V, and (b} Ể, - Ê, {magnitude and direction).
62 cm
FIGURE 17-40 b
Problem 27.
Q=-3.8 µC
88 cm
Chapter 23 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 23.2 - CHAPTER-OPENING QUESTIONGuess now! Consider a pair...Ch. 23.2 - On a dry day, a person can become electrically...Ch. 23.3 - What is the potential at a distance of 3.0cm from...Ch. 23.3 - Consider the three pairs of charges, Q1, and Q2,...Ch. 23.8 - Prob. 1EECh. 23.8 - The kinetic energy of a 1000-kg automobile...Ch. 23 - If two points are at the same potential, does this...Ch. 23 - If a negative charge is initially at rest in an...Ch. 23 - State clearly the difference (a) between electric...Ch. 23 - An electron is accelerated by a potential...
Ch. 23 - Can a particle ever move from a region of low...Ch. 23 - If V = 0 at a point in space, must E=0? If E=0 at...Ch. 23 - When dealing with practical devices, we often take...Ch. 23 - Can two equipotential lines cross? Explain.Ch. 23 - Draw in a few equipotential lines in Fig, 2134b...Ch. 23 - What can you say about the electric field in a...Ch. 23 - A satellite orbits the Earth along a gravitational...Ch. 23 - Suppose the charged ring of Example 238 was not...Ch. 23 - Consider a metal conductor in the shape of a...Ch. 23 - Equipotential lines are spaced 1.00 V apart. Does...Ch. 23 - A conducting sphere carries a charge Q and a...Ch. 23 - At a particular location, the electric field...Ch. 23 - Equipotential lines are spaced 1.00 V apart. Does...Ch. 23 - If the electric field E is uniform in a region,...Ch. 23 - Is the electric potential energy of two unlike...Ch. 23 - (I) What potential difference is needed to stop an...Ch. 23 - (I) How much work does the electric field do in...Ch. 23 - (I) An electron acquires 5.25 1016 J of kinetic...Ch. 23 - (II) The work done by an external force to move a...Ch. 23 - (I) Thunderclouds typically develop voltage...Ch. 23 - (I) The electric field between two parallel plates...Ch. 23 - (I) What is the maximum amount of charge that a...Ch. 23 - (I) What is the magnitude of the electric field...Ch. 23 - (I) What minimum radius must a large conducting...Ch. 23 - (II) A manufacturer claims that a carpet will not...Ch. 23 - (II) A uniform electric field E=4.20N/Ci points in...Ch. 23 - (II) The electric potential of a very large...Ch. 23 - (II) The Earth produces an inwardly directed...Ch. 23 - (II) A 32-cm-diameter conducting sphere is charged...Ch. 23 - (II) An insulated spherical conductor of radius r1...Ch. 23 - (II) Determine the difference in potential between...Ch. 23 - (II) Suppose the end of your finger is charged....Ch. 23 - (II) Estimate the electric field in the membrane...Ch. 23 - (II) A nonconducting sphere of radius r0 carries a...Ch. 23 - (III) Repeat Problem 19 assuming the charge...Ch. 23 - (III) The volume charge density E within a sphere...Ch. 23 - (III) A hollow spherical conductor, carrying a net...Ch. 23 - (III) A very long conducting cylinder (length ) of...Ch. 23 - (I) A point charge Q creates an electric potential...Ch. 23 - (I) (a) What is the electric potential 0.50 1010...Ch. 23 - (a) Because of the inverse square nature of the...Ch. 23 - (II) +25C point charge is placed 6.0 cm from an...Ch. 23 - (II) Point a is 26 cm north of a 3.8 C point...Ch. 23 - (II) How much voltage must be used to accelerate a...Ch. 23 - (II) Two identical +5.5 C point charges are...Ch. 23 - (II) An electron starts from rest 42.5cm from a...Ch. 23 - (II) Two equal but opposite charges are separated...Ch. 23 - (II) A thin circular ring of radius R (as in Fig....Ch. 23 - (II) Three point charges are arranged at the...Ch. 23 - (II) A flat ring of inner radius R1 and outer...Ch. 23 - (II) A total charge Q is uniformly distributed on...Ch. 23 - (II) A 12.0-cm-radius thin ring carries a...Ch. 23 - (II) A thin rod of length 2 is centered on the x...Ch. 23 - (II) Determine the potential V(x) for points along...Ch. 23 - (III) The charge on the rod of Fig. 2331 has a...Ch. 23 - (III) Suppose the flat circular disk of Fig. 2315...Ch. 23 - (I) Draw a conductor in the shape of a football....Ch. 23 - (II) Equipotential surfaces are to be drawn 100 V...Ch. 23 - (II) A metal sphere of radius r0 = 0.44 m carries...Ch. 23 - (II) Calculate the electric potential due to a...Ch. 23 - (III) The dipole moment, considered as a vector,...Ch. 23 - (I) Show that the electric field of a single point...Ch. 23 - (I) What is the potential gradient just outside...Ch. 23 - (II) The electric potential between two parallel...Ch. 23 - () The electric potential in a region of space...Ch. 23 - (II) In a certain region of space, the electric...Ch. 23 - (II) A dust particle with mass of 0.050 g and a...Ch. 23 - (III) Use the results or Problems 38 and 39 to...Ch. 23 - (I) How much work must be done to bring three...Ch. 23 - (I) What potential difference is needed to give a...Ch. 23 - (I) What is the speed of (a) a 1.5-keV (kinetic...Ch. 23 - (II) Many chemical reactions release energy....Ch. 23 - (II) An alpha particle (which is a helium nucleus,...Ch. 23 - (II) Write the total electrostatic potential...Ch. 23 - (II) Four equal point charges, Q, are fixed at the...Ch. 23 - (II) An electron starting from rest acquires 1.33...Ch. 23 - (II) Determine the total electrostatic potential...Ch. 23 - (II) The liquid-drop model of the nucleus suggests...Ch. 23 - (III) Determine the total electrostatic potential...Ch. 23 - (I) Use the ideal gas as a model to estimate the...Ch. 23 - (III) Electrons are accelerated by 6.0kV in a CRT....Ch. 23 - (III) In a given CRT, electrons are accelerated...Ch. 23 - If the electrons in a single raindrop, 3.5 mm in...Ch. 23 - By rubbing a nonconducting material, a charge of...Ch. 23 - Sketch the electric field and equipotential lines...Ch. 23 - A +33 C point charge is placed 36 cm from an...Ch. 23 - At each corner of a cube of side there is a point...Ch. 23 - In a television picture tube (CRT), electrons are...Ch. 23 - Four point charges are located at the corners of a...Ch. 23 - In a photocell, ultraviolet (UV) light provides...Ch. 23 - An electron is accelerated horizontally from rest...Ch. 23 - Three charges are at the corners of an equilateral...Ch. 23 - Near the surface of the Earth there is an electric...Ch. 23 - A lightning flash transfers 4.0 C of charge and...Ch. 23 - Determine the components of the electric field. Ex...Ch. 23 - A nonconducting sphere of radius r2 contains a...Ch. 23 - A thin flat nonconducting disk, with radius R0 and...Ch. 23 - A Geiger counter is used to detect charged...Ch. 23 - A Van de Graaff generator (Fig. 2341) can develop...Ch. 23 - The potential in a region of space is given by V =...Ch. 23 - A charge q1 of mass m rests on the y axis at a...Ch. 23 - (II) A dipole is composed of a 1.0 nC charge at x...Ch. 23 - (II) A thin flat disk of radius R0 carries a total...Ch. 23 - (III) You are trying to determine an unknown...
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- (II) At each corner of a square of side l there are point charges of magnitude Q, 2Q, 3Q, and 4Q (Fig. 16–54). Determine the mag- 20 nitude and direction of the force on the charge 2Q. FIGURE 16–54 Problem 15. 4Qarrow_forward(II) Determine the direction and magnitude of the electric field at the point P in Fig. 16–56. The charges are separated by a distance 2a, and point P is a distance x from the midpoint between the two charges. Express your answer in terms of Q, x, a, and k. +Q а -Q FIGURE 16–56 Problem 31.arrow_forward(2.)(II) Two equal point charges Q are located on the y axis at y = a and y = -a. (a) What is the force on a charge q located at (x, 0)? (b) For what value of x is the force a maximum? Make a rough plot of F(x), the force as a func- tion of x. (c) When x > a, what is the form of F(x)? (Hint: Use the binomial expansion (1+z)" = 1 + nz for small z.)arrow_forward
- (III) The dipole moment, considered as a vector, points from the negative to the positive charge. The water molecule, Fig. 17-42, has a dipole moment p which can be considered as the vector sum of the two dipole moments, P¡ and pP2, as shown. The distance between each H and the O is about 0.96 x 10-10 m. The lines joining the center of the O atom with each H atom make an angle of 104°, as shown, and the net dipole moment has been mea- sured to be p = 6.1 × 10-30 C · m. Determine the charge q on each H atom. 104° H+ FIGURE 17-42 Problem 34. P2 A water molecule, H2O.arrow_forward(II) The electric field midway between two equal but opposite point charges is 386 N/C and the distance between the charges is 16.0 cm. What is the magnitude of the charge on each?arrow_forward(II) The electric field between two parallel square metal plates is 130 N/C. The plates are 0.85 m on a side and are separated by 3.0 cm. What is the charge on each plate (assume equal and opposite)? Neglect edge effectsarrow_forward
- (II) You are given two unknown point charges, Q1 and Q2 . At a point on the line joining them, one-third of the way from Q to Q2 , the electric field is zero (Fig. 16–59). What is the ratio Q1/Q2? E= 0 Qi 3 Q2 FIGURE 16–59 Problem 34. l-arrow_forward(III) Two equal but opposite charges are separated by a distance d, as shown in Fig. 17-41. Determine a formula for VBA = VB - Va for points B and A on the line between the charges situated as shown. -d - FIGURE 17-41 -b- +q b- B Problem 30. A -9arrow_forward(II) Two point charges, Q1 = -32 µC and Q2 = +45 µC, are separated by a distance of 12 cm. The electric field at the point P (see Fig. 16–57) is zero. How far from Qj is P? Q1 Q2 12 cm P -32 μC +45 µC FIGURE 16-57 Problem 32.arrow_forward
- (II) A charge Q is transferred from an initially uncharged plastic ball to an identical ball 24 cm away. The force of attraction is then 17 mN. How many electrons were transferred from one ball to the other?arrow_forward(II) Particles of charge +65, +48, and –95 µC are placed in a line (Fig. 16–52). The center one is 0.35 m from each of the others. Calculate the net force on each charge due to the other two. +65 µC +48 µC -95 µC 0.35 m 0.35 m FIGURE 16–52 Problem 11.arrow_forward(I) A downward electric force of 6.4 N is exerted on a - 7.3µ C charge. Find the magnitude and direction of the electric field at the position of this charge.arrow_forward
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