College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 17, Problem 4CQ
In a common physics demonstration, a rubber rod is first rubbed vigorously on silk or fur. It is then brought close to a small Styrofoam™ ball, which it attracts. If you then touch the ball with the rod, it suddenly repels the ball. Why does it first attract the ball, and why does it then repel the same ball?
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Chapter 17 Solutions
College Physics (10th Edition)
Ch. 17 - Bits of paper are attracted to an electrified comb...Ch. 17 - When you walk across a nylon rug and then touch a...Ch. 17 - What similarities does the electric force have to...Ch. 17 - In a common physics demonstration, a rubber rod is...Ch. 17 - A gold leaf electroscope, which is often used in...Ch. 17 - Show how it is possible for neutral objects to...Ch. 17 - Suppose you have a hollow spherical conductor. Is...Ch. 17 - If an electric dipole is placed in a uniform...Ch. 17 - Why do electric field lines point away from...Ch. 17 - A lightning rod is a pointed copper rod mounted on...
Ch. 17 - A rubber balloon has a single point charge in its...Ch. 17 - Explain how the electric force plays an important...Ch. 17 - Just after two identical point charges are...Ch. 17 - If the electric field is E at a distance d from a...Ch. 17 - Two unequal point charges are separated as shown...Ch. 17 - A spherical balloon contains a charge +Q uniformly...Ch. 17 - An electron is moving horizontally in a laboratory...Ch. 17 - Point P in Figure 17.40 is equidistant from two...Ch. 17 - A hollow conductor carries a net charge of +3Q. A...Ch. 17 - Three equal point charges are held in place as...Ch. 17 - An electric field of magnitude E is measured at a...Ch. 17 - A very small ball containing a charge Q hangs from...Ch. 17 - A point charge Q at the center of a sphere of...Ch. 17 - Two charged small spheres are a distance R apart...Ch. 17 - A positively charged glass rod is brought close to...Ch. 17 - A positively charged rubber rod is moved close to...Ch. 17 - Two iron spheres contain excess charge, one...Ch. 17 - Electrical storms. During an electrical storm,...Ch. 17 - In ordinary laboratory circuits, charges in the C...Ch. 17 - BIO Signal propagation in neurons. Neurons are...Ch. 17 - Particles in a gold ring. You have a pure...Ch. 17 - Two equal point charges of +3.00 106 C are placed...Ch. 17 - The repulsive force between two electrons has a...Ch. 17 - A negative charge of 0.550 C exerts an upward...Ch. 17 - Forces in an atom. The particles in the nucleus of...Ch. 17 - (a) What is the total negative charge, in...Ch. 17 - As you walk across a synthetic-fiber rug on a...Ch. 17 - Two small plastic spheres are given positive...Ch. 17 - An astronaut holds two small aluminum spheres,...Ch. 17 - Two small spheres spaced 20.0 cm apart have equal...Ch. 17 - A 1 kg sphere having a charge of +5 C is placed on...Ch. 17 - If a proton and an electron are released when they...Ch. 17 - Three point charges are arranged on a line. Charge...Ch. 17 - If two electrons are each 1.50 x 1010 m from a...Ch. 17 - Two point charges are located on the y axis as...Ch. 17 - Two point charges are placed on the x axis as...Ch. 17 - Three charges are at the corners of an isosceles...Ch. 17 - BIO Base pairing in DNA, I. The two sides of the...Ch. 17 - BIO Base pairing in DNA, II. Refer to the previous...Ch. 17 - Surface tension. Surface tension is the force that...Ch. 17 - Consider the charges in Figure 17.49. Find the...Ch. 17 - Two unequal charges repel each other with a force...Ch. 17 - In an experiment in space, one proton is held...Ch. 17 - A charge +Q is located at the origin and a second...Ch. 17 - A small object carrying a charge of 8.00 nC is...Ch. 17 - (a) What must the charge (sign and magnitude) of a...Ch. 17 - A uniform electric field exists in the region...Ch. 17 - A particle has a charge of 3.00 nC. (a) Find the...Ch. 17 - The electric field caused by a certain point...Ch. 17 - At a distance of 16 m from a charged particle, the...Ch. 17 - Electric fields in the atom. (a) Within the...Ch. 17 - A proton is traveling horizontally to the right at...Ch. 17 - Two point charges are separated by 25.0 cm (see...Ch. 17 - A point charge of 4.00 nC is at the origin, and a...Ch. 17 - In a rectangular coordinate system, a positive...Ch. 17 - Two particles having charges of +0.500 nC and +8...Ch. 17 - Three negative point charges lie along a line as...Ch. 17 - Torque and force on a dipole. An electric dipole...Ch. 17 - (a) An electron is moving east in a uniform...Ch. 17 - A +20 nC point charge is placed at the origin, and...Ch. 17 - For the dipole shown in Figure 17.53, show that...Ch. 17 - Figure 17.54shows some of the electric field lines...Ch. 17 - A proton and an electron are separated as shown in...Ch. 17 - Sketch electric field lines in the vicinity of two...Ch. 17 - Two point charges Q and +q (where q is positive)...Ch. 17 - Two very large parallel sheets of the same size...Ch. 17 - (a) A closed surface encloses a net charge of 2.50...Ch. 17 - Figure 17.58 shows cross sections of five closed...Ch. 17 - A point charge 8.00 nC is at the center of a cube...Ch. 17 - A charged paint is spread in a very thin uniform...Ch. 17 - (a) How many excess electrons must be distributed...Ch. 17 - An electric dipole consists of charges q and q...Ch. 17 - A total charge of magnitude Q is distributed...Ch. 17 - During a violent electrical storm, a car is struck...Ch. 17 - A neutral conductor completely encloses a hole...Ch. 17 - An irregular neutral conductor has a hollow cavity...Ch. 17 - Three point charges are arranged along the x axis....Ch. 17 - An electron is released from rest in a uniform...Ch. 17 - A charge q1 = +5.00 nC is placed at the origin of...Ch. 17 - A charge of 3.00 nC is placed at the origin of an...Ch. 17 - Point charges of 3.00 nC are situated at each of...Ch. 17 - An electron is projected with an initial speed u0...Ch. 17 - A small 12.3 g plastic ball is tied to a very...Ch. 17 - A 5.00 nC point charge is on the x axis at x =...Ch. 17 - A 9.60 C point charge is at the center of a cube...Ch. 17 - Two point charges q1 and q2 are held 4.00 cm...Ch. 17 - An early model of the hydrogen atom viewed it as...Ch. 17 - Consider a bee with the mean electric charge found...Ch. 17 - What is the best explanation for the observation...Ch. 17 - After one bee left a flower with a positive...Ch. 17 - In a follow-up experiment, a charge of +40 pC was...Ch. 17 - Space radiation shielding. One of the hazards...Ch. 17 - What is the magnitude of just outside the surface...Ch. 17 - Space radiation shielding. One of the hazards...Ch. 17 - Which of the following is true about E inside a...
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