Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 16, Problem 3CQ
To determine
Whether the statement that a hot object contains more heat than a cold object is valid or not.
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is 8.2 in², calculate the resistance per mile of rail, neglecting the effect of joints between sections. (1
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2. An incandescent lamp has a tungsten filament whose resistance is 96 at its operating temperature
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For items 8-9, refer to the problem below.
Find all the currents flowing in every resistor, power dissipation in
every resistor and the total power of the circuit shown at the right
using...
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9. Maxwell's Mesh Analysis (5 pts)
A
8 V
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Nature of Resistance
Temperature-Resistance Relationship
Ohm's Law, Energy and Power
Kirchhoff's Law
• Maxwell's Mesh Analysis
1. A coil of copper wire (p = 10.37 2-cmil/ft) has a length of 600 ft. What is the length of an aluminum conductor
(p 17 cmil/ft), if its cross-sectional area and resistance are the same as those of the copper coil? (Hint: Look
for conversion of inches to mils and square inches to square foot. Include it in your solution.) (1 pt)
2. The copper field winding of an electric machine has a resistance of 46 at temperature of 22°C. What will be
its resistance at 75°C? (Use do = 0.00427 /°C for copper) (1 pt)
3. The resistivity of a copper rod 50 ft long and 0.25 inch in diameter is 1.76 μ at 20°C. What is its resistance at -
20°C? (1 pt)
4. When two resistors A and B are connected in series, the total resistance is 36 2. When connected in parallel, the
total resistance is 8 Q. What is the ratio of the resistance RA to resistance RB? Assume RA < RB. (1 pt)
5. The…
Chapter 16 Solutions
Physics (5th Edition)
Ch. 16.1 - Prob. 1EYUCh. 16.2 - Is the size of a degree in the Fahrenheit scale...Ch. 16.3 - The following systems consist of a metal rod with...Ch. 16.4 - Prob. 4EYUCh. 16.5 - Prob. 5EYUCh. 16.6 - The following systems consist of a cylindrical...Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - If the glass in a glass thermometer had the same...
Ch. 16 - Prob. 5CQCh. 16 - Sometimes the metal lid on a glass jar has been...Ch. 16 - Prob. 7CQCh. 16 - The specific heat of concrete is greater than that...Ch. 16 - When you touch a piece of metal and a piece of...Ch. 16 - The rate of heat flow through a slab does not...Ch. 16 - Prob. 11CQCh. 16 - Updrafts of air allow hawks and eagles to glide...Ch. 16 - BIO The fur of polar bears consists of hollow...Ch. 16 - Object 2 has twice the emissivity of object 1,...Ch. 16 - Prob. 1PCECh. 16 - Prob. 2PCECh. 16 - Incandescent lightbulbs heat a tungsten filament...Ch. 16 - Normal body temperature for humans is 98.6 F. What...Ch. 16 - The temperature at the surface of the Sun is about...Ch. 16 - One day you notice that the outside temperature...Ch. 16 - The gas in a constant-volume gas thermometer has a...Ch. 16 - Prob. 8PCECh. 16 - Greatest Change in Temperature A world record for...Ch. 16 - Prob. 10PCECh. 16 - Prob. 11PCECh. 16 - When the bulb of a constant-volume gas thermometer...Ch. 16 - Bimetallic strip A is made of copper and steel;...Ch. 16 - Prob. 14PCECh. 16 - Predict/Explain A brass plate has a circular hole...Ch. 16 - Figure 16-25 shows five metal plates, all at the...Ch. 16 - Longest Suspension Bridge The worlds longest...Ch. 16 - A vinyl siding panel for a house is installed on a...Ch. 16 - A cylinder bore in an aluminum engine block has a...Ch. 16 - Prob. 20PCECh. 16 - At 18.75 C a brass sleeve has an inside diameter...Ch. 16 - Early in the morning, when the temperature is 5.5...Ch. 16 - Some cookware has a stainless steel interior ( =...Ch. 16 - Predict/Calculate You construct two wire-frame...Ch. 16 - A metal ball that is 1.2 m in diameter expands by...Ch. 16 - A copper ball with a radius of 1.7 cm is heated...Ch. 16 - Predict/Calculate An aluminum saucepan with a...Ch. 16 - Prob. 28PCECh. 16 - BIO An exercise machine indicates that you have...Ch. 16 - BIO A certain sandwich cookie contains 53 C of...Ch. 16 - BIO During a workout, a person repeatedly lifts a...Ch. 16 - Prob. 32PCECh. 16 - BIO It was shown in Example 16-18 that a typical...Ch. 16 - Predict/Explain Two objects are made of the same...Ch. 16 - Prob. 35PCECh. 16 - Prob. 36PCECh. 16 - Prob. 37PCECh. 16 - A 9.7-g lead bullet is fired into a fence post....Ch. 16 - Prob. 39PCECh. 16 - Prob. 40PCECh. 16 - A 225-g lead ball at a temperature of 81.2 C is...Ch. 16 - If 2200 J of heat are added to a 190-g object, its...Ch. 16 - Chips by the Ton Tortilla chips are manufactured...Ch. 16 - Prob. 44PCECh. 16 - To determine the specific heat of an object, a...Ch. 16 - Predict/Calculate A student drops a 0.33-kg piece...Ch. 16 - Prob. 47PCECh. 16 - Predict/Explain In a popular lecture...Ch. 16 - Figure 16-27 shows a composite slab of three...Ch. 16 - Figure 16-28 Problem 50 50. CE Heat is...Ch. 16 - Predict/Explain Two identical bowls of casserole...Ch. 16 - Two bowls of soup with identical temperatures are...Ch. 16 - A glass window 0.33 cm thick measures 81 cm by 39...Ch. 16 - BIO Assuming your skin temperature is 37.2 C and...Ch. 16 - Find the heat that flows in 1.0 s through a lead...Ch. 16 - Consider a double-paned window consisting of two...Ch. 16 - Predict/Calculate Two metal rods of equal...Ch. 16 - Two cylindrical metal rodsone copper, the other...Ch. 16 - Prob. 59PCECh. 16 - Predict/Calculate Consider two cylindrical metal...Ch. 16 - A copper rod 85 cm long is used to poke a fire....Ch. 16 - Two identical objects are placed in a room at 24...Ch. 16 - A block has the dimensions L, 2L, and 3L. When one...Ch. 16 - Prob. 64GPCh. 16 - CE A copper ring stands on edge with a metal rod...Ch. 16 - CE Referring to the copper ring in the previous...Ch. 16 - Prob. 67GPCh. 16 - Making Steel Sheets In the continuous-caster...Ch. 16 - The Coldest Place in the Universe The Boomerang...Ch. 16 - BIO The Hottest Living Things From the surreal...Ch. 16 - Thermal energy is added to 180 g of water at a...Ch. 16 - Prob. 72GPCh. 16 - BIO Brain Power As you read this problem, your...Ch. 16 - BIO Brain Food Your brain consumes about 22 W of...Ch. 16 - BIO The Cricket Thermometer The rate of chirping...Ch. 16 - Predict/Calculate A pendulum consists of a large...Ch. 16 - Prob. 77GPCh. 16 - A256-kg rock sits in full sunlight on the edge of...Ch. 16 - Prob. 79GPCh. 16 - Thermal Storage Solar heating of a house is much...Ch. 16 - Pave It Over Suppose city 1 leaves an entire block...Ch. 16 - Prob. 82GPCh. 16 - You turn a crank on a device similar to that shown...Ch. 16 - Prob. 84GPCh. 16 - The Solar Constant The surface of the Sun has a...Ch. 16 - Bars of two different metals are bolted together,...Ch. 16 - A grandfather clock has a simple brass pendulum of...Ch. 16 - Prob. 88GPCh. 16 - A layer of ice has formed on a small pond. The air...Ch. 16 - A Double-Paned Window An energy-efficient...Ch. 16 - Cool Medicine In situations in which the brain is...Ch. 16 - Cool Medicine In situations in which the brain is...Ch. 16 - Cool Medicine In situations in which the brain is...Ch. 16 - Prob. 94PPCh. 16 - Referring to Example 16-12 Suppose the mass of the...Ch. 16 - Referring to Example 16-12 Suppose the initial...Ch. 16 - Prob. 97PPCh. 16 - Predict/Calculate Referring to Example 16-16...
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- 2. Two equally strong individuals, wearing exactly the same shoes decide to do a tug of war. The only difference is individual A is 2.5 meters tall and individual B is 1.5 meter tall. Who is more likely to win the tug of war?arrow_forward6. A car drives at steady speed around a perfectly circular track. (a) The car's acceleration is zero. (b) The net force on the car is zero. (c) Both the acceleration and net force on the car point outward. (d) Both the acceleration and net force on the car point inward. (e) If there is no friction, the acceleration is outward.arrow_forward9. A spring has a force constant of 100 N/m and an unstretched length of 0.07 m. One end is attached to a post that is free to rotate in the center of a smooth. table, as shown in the top view in the figure below. The other end is attached to a 1kg disc moving in uniform circular motion on the table, which stretches the spring by 0.03 m. Friction is negligible. What is the centripetal force on the disc? Top View (a) 0.3 N (b) 3.0 N (c) 10 N (d) 300 N (e) 1000 Narrow_forward
- 4. A child has a ball on the end of a cord, and whirls the ball in a vertical circle. Assuming the speed of the ball is constant (an approximation), when would the tension in the cord be greatest? (a) At the top of the circle. (b) At the bottom of the circle. (c) A little after the bottom of the circle when the ball is climbing. (d) A little before the bottom of the circle when the ball is descending quickly. (e) Nowhere; the cord is pulled the same amount at all points.arrow_forward3. In a rotating vertical cylinder (Rotor-ride) a rider finds herself pressed with her back to the rotating wall. Which is the correct free-body diagram for her? (a) (b) (c) (d) (e)arrow_forward8. A roller coaster rounds the bottom of a circular loop at a nearly constant speed. At this point the net force on the coaster cart is (a) zero. (b) directed upward. (c) directed downward. (d) Cannot tell without knowing the exact speed.arrow_forward
- 5. While driving fast around a sharp right turn, you find yourself pressing against the left car door. What is happening? (a) Centrifugal force is pushing you into the door. (b) The door is exerting a rightward force on you. (c) Both of the above. (d) Neither of the above.arrow_forward7. You are flung sideways when your car travels around a sharp curve because (a) you tend to continue moving in a straight line. (b) there is a centrifugal force acting on you. (c) the car exerts an outward force on you. (d) of gravity.arrow_forward1. A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is 0.50. A 20-N force is applied to the crate acting to the right. What is the resulting static friction force acting on the crate? (a) 20 N to the right. (b) 20 N to the left. (c) 25 N to the right. (d) 25 N to the left. (e) None of the above; the crate starts to move.arrow_forward
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