Question: A 1.50-m cylindrical rod of

> a). If a spherical raindrop of radius 0.650 mm carries a charge of -3.60 pC uniformly distributed over its volume, what is the potential at its surface? (Take the potential to be zero at an infinite distance from the raindrop.) (b). Two identical raindr

> You are conducting experiments with an air filled parallel-plate capacitor. You connect the capacitor to a battery with voltage 24.0 V. Initially the separation d between the plates is 0.0500 cm. In one experiment, you leave the battery connected to the

> An insulating spherical shell with inner radius 25.0 cm and outer radius 60.0 cm carries a charge of +150.0 µC uniformly distributed over its outer surface. Point a is at the center of the shell, point b is on the inner surface, and point c is on the out

> Charge Q = +4.00 µC is distributed uniformly over the volume of an insulating sphere that has radius R = 5.00 cm. What is the potential difference between the center of the sphere and the surface of the sphere?

> A fuel gauge uses a capacitor to determine the height of the fuel in a tank. The effective dielectric constant Keff changes from a value of 1 when the tank is empty to a value of K, the dielectric constant of the fuel, when the tank is full. The appropri

> A solid sphere of radius R contains a total charge Q distributed uniformly throughout its volume. Find the energy needed to assemble this charge by bringing infinitesimal charges from far away. This energy is called the “self-energy” of the charge distri

> A disk with radius R has uniform surface charge density

> 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 f

> An ideal ammeter A is placed in a circuit with a battery and a light bulb as shown in Fig. Q25.15a, and the ammeter reading is noted. The circuit is then reconnected as in Fig. Q25.15b, so that the positions of the ammeter and light bulb are reversed.

> The vertical deflecting plates of a typical classroom oscilloscope are a pair of parallel square metal plates carrying equal but opposite charges. Typical dimensions are about 3.0 cm on a side, with a separation of about 5.0 mm. The potential difference

> Cathode-ray tubes (CRTs) were often found in oscilloscopes and computer monitors. In Fig. P23.63 an electron with an initial speed of 6.50 × 106 m/s is projected along the axis midway between the deflection plates of a cathode-ray tube. The

> An air capacitor is made by using two flat plates, each with area A, separated by a distance d. Then a metal slab having thickness a (less than d) and the same shape and size as the plates is inserted between them, parallel to the plates and not touching

> A long metal cylinder with radius a is supported on an insulating stand on the axis of a long, hollow, metal tube with radius b. The positive charge per unit length on the inner cylinder is l, and there is an equal negative charge per unit length on the

> Two spherical shells have a common center. The inner shell has radius R1 = 5.00 cm and charge q1 = +3.00 × 10-6 C; the outer shell has radius R2 = 15.0 cm and charge q2 = -5.00 × 10-6 C. Both charges are spread uniformly over the shell surface. What is t

> A small sphere with mass 1.50 g hangs by a thread between two very large parallel vertical plates 5.00 cm apart (Fig. P23.59). The plates are insulating and have uniform surface charge densities +

> A parallel-plate air capacitor is made by using two plates 12 cm square, spaced 3.7 mm apart. It is connected to a 12-V battery. (a). What is the capacitance? (b). What is the charge on each plate? (c). What is the electric field between the plates? (

> Figure P23.57 shows eight point charges arranged at the corners of a cube with sides of length d. The values of the charges are +q and -q, as shown. This is a model of one cell of a cubic ionic crystal. In sodium chloride (NaCl), for instance, the positi

> Two oppositely charged, identical insulating spheres, each 50.0 cm in diameter and carrying a uniformly distributed charge of magnitude 250 µC, are placed 1.00 m apart center to center (Fig. P23.56). Fig. P23.56: (a). If a voltmeter is c

> A vacuum tube diode consists of concentric cylindrical electrodes, the negative cathode and the positive anode. Because of the accumulation of charge near the cathode, the electric potential between the electrodes is given by V(x) = Cx4/3 where x is th

> Suppose you bring a slab of dielectric close to the gap between the plates of a charged capacitor, preparing to slide it between the plates. What force will you feel? What does this force tell you about the energy stored between the plates once the diele

> Identical charges q = +5.00 µC are placed at opposite corners of a square that has sides of length 8.00 cm. Point A is at one of the empty corners, and point B is at the center of the square. A charge q0 = -3.00 µC is placed at point A and moves along th

> A particle with charge +7.60 nC is in a uniform electric field directed to the left. Another force, in addition to the electric force, acts on the particle so that when it is released from rest, it moves to the right. After it has moved 8.00 cm, the addi

> A proton and an alpha particle are released from rest when they are 0.225 nm apart. The alpha particle (a helium nucleus) has essentially four times the mass and two times the charge of a proton. Find the maximum speed and maximum acceleration of each of

> When radium-226 decays radioactively, it emits an alpha particle (the nucleus of helium), and the end product is radon-222. We can model this decay by thinking of the radium-226 as consisting of an alpha particle emitted from the surface of the spherical

> A small sphere with mass 5.00 × 10-7 kg and charge +7.00 µC is released from rest a distance of 0.400 m above a large horizontal insulating sheet of charge that has uniform surface charge density

> A gold nucleus has a radius of 7.3 × 10-15 m and a charge of +79e. Through what voltage must an alpha particle, with charge +2e, be accelerated so that it has just enough energy to reach a distance of 2.0 × 10-14 m from the surface of a gold nucleus? (As

> The power rating of a light bulb (such as a 100-W bulb) is the power it dissipates when connected across a 120-V potential difference. What is the resistance of? (a). a 100-W bulb and (b). a 60-W bulb? (c). How much current does each bulb draw in norm

> A “540-W” electric heater is designed to operate from 120-V lines. (a). What is its operating resistance? (b). What current does it draw? (c). If the line voltage drops to 110 V, what power does the heater take? (Assume that the resistance is constant

> In the circuit in Fig. E25.47, find Fig. E25.47: (a). the rate of conversion of internal (chemical) energy to electrical energy within the battery; (b). the rate of dissipation of electrical energy in the battery; (c). the rate of dissipation of elec

> A typical small flashlight contains two batteries, each having an emf of 1.5 V, connected in series with a bulb having resistance 17 Ω. (a). If the internal resistance of the batteries is negligible, what power is delivered to the bulb? (b). If the bat

> A capacitor made of aluminum foil strips separated by Mylar film was subjected to excessive voltage, and the resulting dielectric breakdown melted holes in the Mylar. After this, the capacitance was found to be about the same as before, but the breakdown

> A 25.0-Ω bulb is connected across the terminals of a 12.0-V battery having 3.50 Ω of internal resistance. What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?

> An idealized voltmeter is connected across the terminals of a 15.0-V battery, and a 75.0-Ω appliance is also connected across its terminals. If the voltmeter reads 11.9 V, (a). how much power is being dissipated by the appliance, and (b). what is the i

> The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A ∙ h). A 50-A ∙ h battery can supply a current of 50 A for 1.0 h, or 25 A for 2.0 h, and so on. (a). What total energy can be supplied by

> A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3.0 ms. (a). What power does the defibrillator deliver to

> Electric eels generate electric pulses along their skin that can be used to stun an enemy when they come into contact with it. Tests have shown that these pulses can be up to 500 V and produce currents of 80 mA (or even larger). A typical pulse lasts for

> Consider the circuit of Fig. E25.30. Fig. E25.30: (a). What is the total rate at which electrical energy is dissipated in the 5.0- Ω and 9.0-Ω resistors? (b). What is the power output of the 16.0-V battery? (c). At what rate

> In Europe the standard voltage in homes is 220 V instead of the 120 V used in the United States. Therefore a “100-W” European bulb would be intended for use with a 220-V potential difference (see Problem 25.36). Problem 25.36: If a “75-W” bulb (see Pr

> If a “75-W” bulb (see Problem 25.35) is connected across a 220-V potential difference (as is used in Europe), how much power does it dissipate? Ignore the temperature dependence of the bulb’s resistance. Problem 25.35: The power rating of a light bulb

> Consider the circuit shown in Fig. E25.26. The terminal voltage of the 24.0-V battery is 21.2 V. What are Fig. E25.26: (a). the internal resistance r of the battery and (b) the resistance R of the circuit resistor? r 24.0 V ww 4.00 A R 4.00 A ww

> A copper transmission cable 100 km long and 10.0 cm in diameter carries a current of 125 A. (a). What is the potential drop across the cable? (b). How much electrical energy is dissipated as thermal energy every hour?

> Is dielectric strength the same thing as dielectric constant? Explain any differences between the two quantities. Is there a simple relationship between dielectric strength and dielectric constant (see Table 24.2)? Table 24.2: Dielectric Strength,

> The circuit shown in Fig. E25.33 contains two batteries, each with an emf and an internal resistance, and two resistors. Find Fig. E25.33: (a) the current in the circuit (magnitude and direction) and (b) the terminal voltage Vab of the 16.0-V batter

> In the circuit of Fig. E25.30, the 5.0-Ω resistor is removed and replaced by a resistor of unknown resistance R. When this is done, an ideal voltmeter connected across the points b and c reads 1.9 V. Find Fig. E25.30: (a). the current in

> In the circuit shown in Fig. E25.30, the 16.0-V battery is removed and reinserted with the opposite polarity, so that its negative terminal is now next to point a. Find Fig. E25.30: (a). the current in the circuit (magnitude and direction); (b). the

> The circuit shown in Fig. E25.30 contains two batteries, each with an emf and an internal resistance, and two resistors. Find Fig. E25.30: (a). the current in the circuit (magnitude and direction); (b). the terminal voltage Vab of the 16.0-V battery;

> When switch S in Fig. E25.29 is open, the voltmeter V reads 3.08 V. When the switch is closed, the voltmeter reading drops to 2.97 V, and the ammeter A reads 1.65 A. Find the emf, the internal resistance of the battery, and the circuit resistance R. Assu

> An idealized ammeter is connected to a battery as shown in Fig. E25.28. Find Fig. E25.28: (a). the reading of the ammeter, (b). the current through the 4.00-Ω resistor, (c). the terminal voltage of the battery. (A 2.00 Ω 10.0 V 4.00

> An ideal voltmeter V is connected to a 2.0-Ω resistor and a battery with emf 5.0 V and internal resistance 0.5 Ω as shown in Fig. E25.27. Fig. E25.27: (a). What is the current in the 2.0- Ω resistor? (b). What is t

> At room temperature, what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm) that is needed to cause a 4.50-A current to flow? (b). What field would be needed if the wire were made of silver instead?

> (a). What is the resistance of a Nichrome wire at 0.0°C if its resistance is 100.00 Ω at 11.5°C? (b). What is the resistance of a carbon rod at 25.8°C if its resistance is 0.0160 Ω at 0.0°C?

> Temperature coefficients of resistivity are given in Table 25.2. Table 25.2: (a). If a copper heating element is connected to a source of constant voltage, does the electrical power consumed by the heating element increase or decrease as its temperat

> A hollow aluminum cylinder is 2.50 m long and has an inner radius of 2.75 cm and an outer radius of 4.60 cm. Treat each surface (inner, outer, and the two end faces) as an equipotential surface. At room temperature, what will an ohmmeter read if it is co

> A current-carrying gold wire has diameter 0.84 mm. The electric field in the wire is 0.49 V/m. What are (a). the current carried by the wire; (b). the potential difference between two points in the wire 6.4 m apart; (c). the resistance of a 6.4-m leng

> A strand of wire has resistance 5.60 µΩ. Find the net resistance of 120 such strands if they are (a). placed side by side to form a cable of the same length as a single strand, and (b). connected end to end to form a wire 120 times as long as a single s

> A cylindrical tungsten filament 15.0 cm long with a diameter of 1.00 mm is to be used in a machine for which the temperature will range from room temperature (20°C) up to 120°C. It will carry a current of 12.5 A at all temperatures

> A wire 6.50 m long with diameter of 2.05 mm has a resistance of 0.0290 Ω. What material is the wire most likely made of?

> A 14-gauge copper wire of diameter 1.628 mm carries a current of 12.5 mA. (a). What is the potential difference across a 2.00-m length of the wire? (b). What would the potential difference in part (a) be if the wire were silver instead of copper, but a

> A copper wire has a square cross section 2.3 mm on a side. The wire is 4.0 m long and carries a current of 3.6 A. The density of free electrons is 8.5 × 1028/m3. Find the magnitudes of (a). the current density in the wire and (b). the electric field in

> During lightning strikes from a cloud to the ground, currents as high as 25,000 A can occur and last for about 40 µs. How much charge is transferred from the cloud to the earth during such a strike?

> Current passes through a solution of sodium chloride. In 1.00 s, 2.68 × 1016 Na+ ions arrive at the negative electrode and 3.92 × 1016 Cl- ions arrive at the positive electrode. (a). What is the current passing between the electrodes? (b). What is the

> The current in a wire varies with time according to the relationship I = 55 A – (0.65 A/s2) t2. (a). How many coulombs of charge pass a cross section of the wire in the time interval between t = 0 and t = 8.0 s? (b). What constant current would transpo

> You have two capacitors and want to connect them across a voltage source (battery) to store the maximum amount of energy. Should they be connected in series or in parallel?

> A point charge q1 = +2.40 µC is held stationary at the origin. A second point charge q2 = -4.30 µC moves from the point x = 0.150 m, y = 0 to the point x = 0.250 m, y = 0.250 m. How much work is done by the electric force on q2?

> 1. The town of Sanford, Maine, decided to auction off a lot it owned. The town advertised that it would accept bids through the mail, up to a specified date. Arthur and Arline Chevalier mailed in a bid that turned out to be the highest. When the town ref

> Ramona was indicted on charges of real estate fraud. During a legal search of her home, the police found a computer with encrypted files. Would it be a violation of her Fifth Amendment right against self-incrimination to force her to unencrypt these file

> Officer Trottier stopped Marie Winfield for driving 20 miles over the speed limit. He then became suspicious because her son would not make eye contact and she was eating a Powerbar in a “hurried manner.” The officer asked for and Winfield granted him pe

> A police officer in North Carolina stopped Nick’s car because it had a broken brake light. Nick allowed the officer to search the car and, during the search, the officer found cocaine. It turns out that the original stop was invalid because drivers in No

> Hiring relatives of foreign officials for no-show jobs is a violation of the FCPA. But what about hiring children of government officials into real jobs? Is that also a violation? The U.S. government is investigating JPMorgan Chase & Co.’s practice of hi

> Suppose two people are living together: the suspect and a tenant. If the tenant consents to a police search of the premises, then the police are not required to first obtain a warrant. What if the suspect and the tenant disagree, with the tenant granting

> Craig Newmark founded craigslist, the most popular website in the country for classified ads. Rather than maximizing its profits, craigslist instead focused on developing a community among its users. It was a place to find an apartment, a pet, a job, a c

> Mickle pleaded guilty to rape. The judge sentenced him to prison for five years and also ordered that he undergo a vasectomy. Was this cruel and unusual punishment?

> In his most famous novel, The Red and the Black, the French author Stendhal (1783–1842) wrote: “There is no such thing as ‘natural law’: this expression is nothing but old nonsense. Prior to laws, what is natural is only the strength of the lion, or the

> 1. Senate investigators found that executives at JPMorgan Chase & Co. lied to investors and the public. Also, traders, with the knowledge of top management, changed risk limits to facilitate more trading and then violated even these higher limits. Execut

> Mary wrote a check on her account at First Bank for $23,000 payable to the order of Eagle Construction Company. Sylvia, who was an Eagle employee, deposited Mary’s check in her personal account at Second Bank, without first having someone indorse it. Whe

> Marina Stengart used her company laptop to communicate with her lawyer via her personal, password-protected, web-based e-mail account. The company’s policy stated: E-mail and voice mail messages, internet use and communication and computer files are cons

> Should you have a will? Do you have one?

> Imagine that you sign a lease and that you are to move into your new apartment on August 15. When you arrive, the previous tenant has not moved out. In fact, he has no intention of moving out. Compare the English and American rules. Should the landlord i

> Music stars Beyoncé and Jay-Z named their newborn daughter Blue Ivy and then rushed to trademark the name, because they planned to use it in commerce. Their application was denied because a wedding planner in Massachusetts was already using “Blue Ivy” as

> 1. Milton Friedman was a strong believer in the _____________ model. He _______________ argue that a corporate leader's sole obligation is to make money for the company's owners. A. shareholder; did B. shareholder; did not C. stakeholder; did D. stakehol

> 1. The United States Constitution is among the finest legal accomplishments in the history of the world. Which of the following influenced Franklin, Jefferson, and the rest of the Founding Fathers? A. English common-law principles B. The Iroquois’ syst

> 1. A decedent’s will provided that the estate was to be divided among the decedent’s issue, per capita and not per stirpes. If there are two surviving children and three grandchildren who are children of a predeceased child at the time the will is probat

> Advertisements for Listerine mouthwash claimed that it was as effective as flossing in preventing tooth plaque and gum disease. This statement was true, but only if the flossing was done incorrectly. In fact, many consumers do floss incorrectly. However,

> 1. Which of the following requirements must be met to create a bailment? I. Delivery of personal property to the intended bailee II. Possession by the intended bailee (a) I only (b) II only (c) Both I and II (d) None of the above 2. Consider the follow

> 1. Quick, Onyx, and Nash were deeded a piece of land as tenants in common. The deed provided that Quick owned one-half the property and Onyx and Nash owned one-quarter each. If Nash dies, the property will be owned as follows: (a) Quick 1⁄2, Onyx 1⁄2. (b

> Recall the Quimby case. This type of fraud is increasingly common. What could Quimby have done to protect himself?

> Process cheese food slices must contain at least 51% natural cheese. Imitation cheese slices, by contrast, contain little or no natural cheese and consist primarily of water, vegetable oil, flavoring, and “fortifying agents.” Kraft, Inc. makes Kraft Sing

> 1. Taylor Swift wanted to trademark her song lyrics: “And I’ll write your name.” She_______. A. can trademark it only if she registers it B. can trademark it only if it is in a tangible form C. cannot trademark it because it is not novel D. can trademark

> 1. Suppose that you are the manager of General Motors plant that is about to start producing Hummers. The Hummer requires special protective paint that, as it turns out, reacts with other chemicals during the application process to create a pollutant. Wh

> To conceive a child, some infertile couples need an egg from a fertile woman. In this market, eggs from smart, pretty women are the most valuable. However, the American Society for Reproductive Medicine recommended that clinics cap any payments to donors

> 1. Dell sold computers online with a particular software. In fact, the software was not available for several months. Instead, Dell sent customers a coupon for the software “when available.” What did Dell do wrong? I. Failed to offer buyers the opportuni

> 1. Are horizontal price fixing and vertical price fixing per se violations of the Sherman Act? A. Yes, Yes B. Yes, No C. No, Yes D. No, No 2. If Sterling Steel (SS) refused to buy concrete from Carat Concrete (CC) unless CC bought steel from SS would tha

> Clarice, a young woman with a mental disability, brought a malpractice suit against a doctor at the Medical Center. As a result, the Medical Center refused to treat her on a nonemergency basis. Clarice then went to another local clinic, which was later a

> 1. When a common stock offering requires registration under the Securities Act of 1933: (a) the registration statement is automatically effective when filed with the SEC. (b) the issuer would act unlawfully if it were to sell the common stock without pro

> 1. A voluntary petition filed under the liquidation provisions of Chapter 7 of the federal Bankruptcy Code: A. Is not available to a corporation unless it has previously filed a petition under the reorganization provisions of Chapter 11 of the Code B. au

> 1. A majority of shareholders at Weed, Inc. wanted to reinstate the former CEO of the company and sell off an unprofitable division. Do shareholders have the right to make these two decisions? A. Yes to both. B. No to both. C. The shareholders have the r

> 1. The burden of proof in a civil trial is to prove a case ___. The burden of proof rests with the ___. A. beyond a reasonable doubt; plaintiff B. by a preponderance of the evidence; plaintiff C. beyond a reasonable doubt; defendant D. by a preponderance

> 1. If a manager engages in self-dealing, which of the following answers will NOT protect him from a finding that he violated the business judgment rule: A. The disinterested members of the board approved the transaction B. The transaction was of minor im

> Omnicare was a company that sold medication to nursing homes. When it made these sales, it often received rebates from drug companies. In its registration statement under the 1933 Act, the company stated that the rebates were legal. Ultimately, however,

> 1. Generally, a corporation’s articles of incorporation must include all of the following except the: A. Name of the corporation’s registered agent B. Name of each incorporator C. Number of authorized shares D. Quorum requirements 2. Destiny Manufacturin