Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
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Chapter 6, Problem 23MC
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Physical Universe
Ch. 6 - The charge on an electron a. is 1 C b. depends on...Ch. 6 - A positive electric charge a. attracts other...Ch. 6 - A positively charged rod is brought near an...Ch. 6 - Protons and electrons have different masses. When...Ch. 6 - Coulombs law for the force between electric...Ch. 6 - The electric force between a proton and an...Ch. 6 - An atom consists of a a. uniform distribution of...Ch. 6 - Prob. 8MCCh. 6 - An object has a positive electric charge whenever...Ch. 6 - A solid conductor is one a. whose electrons are...
Ch. 6 - Prob. 11MCCh. 6 - Match each of the electrical qualities listed...Ch. 6 - Electric power is equal to a. (current)(voltage)...Ch. 6 - The electric energy lost when a current passes...Ch. 6 - When a magnetized bar of iron is strongly heated,...Ch. 6 - All magnetic fields originate in a. iron atoms b....Ch. 6 - The force on an electron that moves in a curved...Ch. 6 - Magnetic field lines provide a convenient way to...Ch. 6 - In a drawing of magnetic field lines, the weaker...Ch. 6 - Prob. 20MCCh. 6 - Prob. 21MCCh. 6 - Prob. 22MCCh. 6 - Prob. 23MCCh. 6 - Prob. 24MCCh. 6 - Prob. 25MCCh. 6 - Prob. 26MCCh. 6 - Prob. 27MCCh. 6 - A generator is said to generate electricity. What...Ch. 6 - Prob. 29MCCh. 6 - Prob. 30MCCh. 6 - If 105 electrons are added to a neutral object,...Ch. 6 - A positive and a negative charge are initially 4...Ch. 6 - The force between two charges of 3 109 C that are...Ch. 6 - Five joules of work are needed to shift 10 C of...Ch. 6 - When the voltage across a certain resistance is V,...Ch. 6 - The voltage needed to produce a current of 5 A in...Ch. 6 - The resistance of a lightbulb that draws a current...Ch. 6 - The current in a 40-W, 120-V electric lightbulb is...Ch. 6 - A cars storage battery is being charged at a rate...Ch. 6 - A 120-V, 1-kW electric heater is mistakenly...Ch. 6 - A 240-V, 1-kW electric heater is mistakenly...Ch. 6 - Prob. 42MCCh. 6 - What reasons might there be for the universal...Ch. 6 - Electricity was once thought to be a weightless...Ch. 6 - A plastic ball has a charge of +1012 C. (a) Does...Ch. 6 - Why does the production of electricity by friction...Ch. 6 - Prob. 5ECh. 6 - Compare the basic characters of electric and...Ch. 6 - Find the total charge of 1 g of protons.Ch. 6 - Is there any distance at which the gravitational...Ch. 6 - When two objects attract each other electrically,...Ch. 6 - How do we know that the force holding the earth in...Ch. 6 - A hydrogen molecule consists of two hydrogen atoms...Ch. 6 - A charge of +2 107 C is 10 cm from a charge of 6 ...Ch. 6 - A charge of +3 109 C is 50 cm from a charge of 5 ...Ch. 6 - Two charges repel each other with a force of 0.1 N...Ch. 6 - Two charges originally 80 mm apart are brought...Ch. 6 - Two small spheres are given identical positive...Ch. 6 - (a) A metal sphere with a charge of +1 105 C is...Ch. 6 - Suppose the force between the earth and the moon...Ch. 6 - How far apart are two charges of +1 108 C that...Ch. 6 - How is the movement of electricity through air...Ch. 6 - One terminal of a battery is connected to a...Ch. 6 - Why do you think bending a wire does not affect...Ch. 6 - What basic aspect of superconductivity has...Ch. 6 - Sensitive instruments can detect the passage of as...Ch. 6 - (a) The capacity of a battery is usually quoted in...Ch. 6 - The energy stored in a certain 12-V battery is 3...Ch. 6 - The potential difference between a cloud and the...Ch. 6 - (a) A person can be electrocuted while taking a...Ch. 6 - How much current is drawn by a 240-V water heater...Ch. 6 - Prob. 30ECh. 6 - Prob. 31ECh. 6 - A fuse prevents more than a certain amount of...Ch. 6 - Should a fuse be connected in series or in...Ch. 6 - Heavy users of electric power, such as large...Ch. 6 - How are the terminals of a set of batteries...Ch. 6 - Prob. 36ECh. 6 - (a) If a 75-W lightbulb is connected to a 120-V...Ch. 6 - Prob. 38ECh. 6 - Prob. 39ECh. 6 - Prob. 40ECh. 6 - Prob. 41ECh. 6 - Prob. 42ECh. 6 - Prob. 43ECh. 6 - Prob. 44ECh. 6 - A 1.35-V mercury cell with a capacity of 1.5 A h...Ch. 6 - Prob. 46ECh. 6 - Prob. 47ECh. 6 - Prob. 48ECh. 6 - Prob. 49ECh. 6 - A current flows west through a power line. Find...Ch. 6 - Prob. 51ECh. 6 - Prob. 52ECh. 6 - Two parallel wires carry currents in the same...Ch. 6 - Prob. 54ECh. 6 - A current-carrying wire is in a magnetic field....Ch. 6 - Prob. 56ECh. 6 - Prob. 57ECh. 6 - Prob. 58ECh. 6 - Prob. 59ECh. 6 - Prob. 60ECh. 6 - Prob. 61ECh. 6 - Prob. 62ECh. 6 - Prob. 63ECh. 6 - Given a coil of wire and a small lightbulb, how...Ch. 6 - Prob. 65ECh. 6 - Prob. 66ECh. 6 - A transformer rated at a maximum power of 10 kW is...Ch. 6 - An electric welding machine uses a current of 400...
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- What creates a magnetic Hold? More than one answer may be correct, (a) a stationary object with electric charge (b) a moving object with electric charge (c) a stationary conductor carrying electric current (d) a difference in electric potential (e) a charged capacitor disconnected from a battery and at rest Note: In Chapter 34, we will see that a changing electric field also creates a magnetic field.arrow_forwardThe following statements are related to the force of a magnetic field on a current-carrying wire. Indicate whether each statement is true (T) or false (F). (a) The magnetic force on the wire is independent of the direction of the current. (b) The force on the wire is directed perpendicular to both the wire and the magnetic field. (c) The force takes its largest value when the magnetic field is parallel to the wire.arrow_forwardA magnet attracts a piece of iron. The iron can then attract another piece of iron. On the basis of domain alignment, explain what happens in each piece of Iron.arrow_forward
- Why do iron filings show magnetic field patterns?arrow_forwardThe copper sheet shown below is partially in a magnetic field. When it is pulled to the right, a resisting force pulls it to the left. Explain. What happen if the sheet is pushed to the left?arrow_forwardWhat is the direction of the magnetic force on the current in earth of the six cases in Figure 22.53?arrow_forward
- A 25-cm nod moves at 5.0 m/s in a plane perpendicular to a magnetic field of strength 0.25 T. The rod, velocity vector, and magnetic field vector are mutually perpendicular, as indicated in tire accompanying figure. Calculate (a) the magnetic force on an electron in tire rod, (b) the electric field in the rod, and (c) the potential difference between the ends of the rod. (d) What is the speed of the rod if the potential difference is 1.0 V?arrow_forwardA Hall probe gives a reading of 1.5V for a current of 2 A when it is placed in a magnetic field of 1 T, What is tire magnetic field in a region where tire reading is 2V for 1.7 A of current?arrow_forwardAn electron moving at 4.00103 m/s in a 1.25-T magnetic field experiences a magnetic force of 1.401016 N. What angle does the velocity of the electron make with the magnetic field? There are two answers.arrow_forward
- A particle’s path is bent when it passes through a region of non-zero magnetic field although its speed remains unchanged. This is very useful for “beam steering’’ in particle accelerators. Consider a proton of speed 4106m/s entering a region of uniform magnetic field 0.2 T over a 5-cm-wide region. Magnetic field is perpendicular to the velocity of the particle. By how much angle will the path of the proton be bent? (Hint: the particle comes out tangent to a circle.arrow_forwardCalculate the size of the magnetic field 20 m below a high voltage power line. The line carries 450 MW at a voltage of 300,000 V.arrow_forwardA transmission line strung 7.0 m above the ground carries a current of 500 A. What is the magnetic field on the ground directly below the wire? Compare your' answer with the magnetic field of Earth.arrow_forward
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