College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Textbook Question
Chapter 20, Problem 37P
A circular coil of 50 loops and diameter 20.0 cm is lying flat on a tabletop and carries a clockwise current of 2.50 A. A magnetic field of 0 450 T, directed to the north and at an angle of 45.0° from the vertical down through the coil and into the tabletop, is turned on. (a) What is the torque on the coil, and (b) which side of the coil (north or south) will tend to rise from the tabletop?
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Part C
Find the height yi
from which the rock was launched.
Express your answer in meters to three significant figures.
Learning Goal:
To practice Problem-Solving Strategy 4.1 for projectile motion problems.
A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration.
PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems
MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model.
VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ.
SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…
Chapter 20 Solutions
College Physics (10th Edition)
Ch. 20 - If an electron beam in a cathode-ray tube travels...Ch. 20 - Why is it not a good idea to call magnetic field...Ch. 20 - If the magnetic force does no work on a charged...Ch. 20 - A permanent magnet can be used to pick up a string...Ch. 20 - Streams of charged particles emitted from the sun...Ch. 20 - A student once proposed to obtain an isolated...Ch. 20 - The magnetic force on a moving charged particle is...Ch. 20 - The text discusses the magnetic field of an...Ch. 20 - Two parallel conductors carrying current in the...Ch. 20 - Household wires (such as lamp cords) often carry...
Ch. 20 - Can a charged particle move through a magnetic...Ch. 20 - Prob. 12CQCh. 20 - An electron traveling with a speed v enters a...Ch. 20 - A beam of protons is directed horizontally into...Ch. 20 - A wire carrying a current in the direction shown...Ch. 20 - A solenoid is connected to a battery as shown in...Ch. 20 - Two very long, straight, parallel wires carry...Ch. 20 - A light circular wire suspended by a thin silk...Ch. 20 - An electron is moving di'ectly toward you in a...Ch. 20 - Three particles having the same mass and the same...Ch. 20 - A metal bar connected by metal leads to the...Ch. 20 - A certain current produces a magnetic field 8 near...Ch. 20 - A coil is connected to a battery as shown in...Ch. 20 - A particle enters a uniform magnetic field...Ch. 20 - In a 1.25 T magnetic field directed vertically...Ch. 20 - An ion having charge +6e is traveling horizontally...Ch. 20 - A proton traveling at 3 60 km/s suddenly enters a...Ch. 20 - A particle having a mass of 0.195 g carries a...Ch. 20 - At a given instant, a particle with a mass of 5.00...Ch. 20 - If the magnitude of the magnetic force on a proton...Ch. 20 - A particle with mass 3 102 kg and charge +5 C...Ch. 20 - A particle with a charge of 2.50 108 C is moving...Ch. 20 - A particle with mass 1.81 103 kg and a charge of...Ch. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - An electron moves at 2.50 106 m/s through a...Ch. 20 - In a cloud chamber- experiment, 3 proton enters a...Ch. 20 - An alpha particle (a He nucleus, containing two...Ch. 20 - A deuteron particle (the nucleus of an isotope of...Ch. 20 - A beam of protons traveling at 1.20 km/s enters a...Ch. 20 - A uniform magnetic field bends an electron in a...Ch. 20 - 18. An electron at point A in Figure 20.59 has a...Ch. 20 - Prob. 19PCh. 20 - A 3.25 g bullet picks up an electric charge of...Ch. 20 - An electron travels into a 0.3 magnetic field...Ch. 20 - Prob. 22PCh. 20 - Singly ionized (one electron removed) atoms are...Ch. 20 - Ancient meat eating. The amount of meat in...Ch. 20 - A straight vertical wire carries a current of 1.20...Ch. 20 - Magnetic force on a lightning bolt. Currents...Ch. 20 - A horizontal rod 0.200 m long carries a current...Ch. 20 - A straight 2.5 m wire carries a typical household...Ch. 20 - A magnetic field is used to suspend a wire of mass...Ch. 20 - A rectangular 10.0 cm by 20.0 cm circuit carrying...Ch. 20 - A long wire carrying a 6.00 A current reverses...Ch. 20 - As long wire carrying 4.50 A or current makes two...Ch. 20 - The 20.0 cm by 35.0 cm rectangular circuit shown...Ch. 20 - Prob. 34PCh. 20 - A circular coil of wire 8.6 cm in diameter has 15...Ch. 20 - A coil having 165 turns and a radius of 1.2 cm...Ch. 20 - A circular coil of 50 loops and diameter 20.0 cm...Ch. 20 - You want to produce a magnetic field of magnitude...Ch. 20 - Household magnetic fields. Home circuit breakers...Ch. 20 - (a) How large a current would a very long,...Ch. 20 - Currents in the heart. The body contains many...Ch. 20 - Magnetic sensitivity of electric fish. Electric...Ch. 20 - A jumper cable is used to start a car that has a...Ch. 20 - If the magnetic field due to a long, straight,...Ch. 20 - A long, straight wire carries a current l0 and...Ch. 20 - EMF. Currents in dc transmission lines can be 100...Ch. 20 - A long, straight telephone cable contains six...Ch. 20 - Two insulated wires perpendicular to each other in...Ch. 20 - Two long straight parallel wires are 10.0 cm apart...Ch. 20 - Set Up: B=0l2r The direction of BB is given by the...Ch. 20 - Two high-current transmission lines carry currents...Ch. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - An electric bus operates by drawing current from...Ch. 20 - A circular metal loop is 22 cm in diameter, (a)...Ch. 20 - A closely wound circular coil with a diameter of...Ch. 20 - A closely wound circular coil has a radius of 6.00...Ch. 20 - BIO Currents in the brain. The magnetic field...Ch. 20 - A closely wound, circular coil with radius 2.40 cm...Ch. 20 - Two circular concentric loops of wire lie on a...Ch. 20 - Calculate the magnitude and direction of the...Ch. 20 - A solenoid contains 750 coils of very thin wire...Ch. 20 - As a new electrical technician, you are designing...Ch. 20 - A solenoid is designed to produce a 0.0279 T...Ch. 20 - As shown in Figure 20.67, a single circular...Ch. 20 - A solenoid that is 35 cm long and contains 450...Ch. 20 - You have 25 m of wire, which you want to use to...Ch. 20 - A toroidal solenoid (see Figure 20.42) has inner...Ch. 20 - Three long, straight electrical cables, running...Ch. 20 - A long, straight, cylindrical wire of radius R...Ch. 20 - Platinum is a paramagnetic metal having a relative...Ch. 20 - When a certain paramagnetic material is placed in...Ch. 20 - A 150 g ball containing 4.00 108 excess electrons...Ch. 20 - Magnetic balance. The circuit shown in Figure...Ch. 20 - A thin 50.0-cm-long metal bar with mass 750 g...Ch. 20 - 76. A long, straight wire containing a...Ch. 20 - A singly charged an of Li (on isotope of lithium...Ch. 20 - An insulated circular ring of diameter 6.50 cm...Ch. 20 - The effect of transmission lines. Two hikers are...Ch. 20 - DATA A current-carrying wife of length 0.15 m is...Ch. 20 - Two very long, straight wires carry currents as...Ch. 20 - Prob. 82GPCh. 20 - Prob. 83GPCh. 20 - Prob. 84GPCh. 20 - A long wire carrying 6.50 A of current makes two...Ch. 20 - BIO Magnetic fields and MRI. Magnetic resonance...Ch. 20 - Prob. 87PPCh. 20 - The large magnetic fields used in MRI can produce...Ch. 20 - BIO Studying magnetic bacteria. Some types of...Ch. 20 - To use a larger sample of bacteria, the...Ch. 20 - BIO Studying magnetic bacteria. Some types of...
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