PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
5th Edition
ISBN: 9780321992277
Author: GIANCOLI
Publisher: PEARSON
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Chapter 26, Problem 14Q
Explain in detail how you could measure the internal resistance of a battery.
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Passage Problems
Laptop computers are equipped with accelerometers that sense when
the device is dropped and then put the hard drive into a protective mode.
Your computer geek friend has written a program that reads the accel-
erometer and calculates the laptop's apparent weight. You're amusing
yourself with this program on a long plane flight. Your laptop weighs
just 5 pounds, and for a long time that's what the program reports. But
then the "Fasten Seatbelt" light comes on as the plane encounters turbu-
lence. Figure 4.27 shows the readings for the laptop's apparent weight
over a 12-second interval that includes the start of the turbulence.
76. At the first sign of turbulence,
the plane's acceleration
a. is upward.
b. is downward.
c. is impossible to tell from
the graph.
77. The plane's vertical ac-
celeration has its greatest
magnitude
a. during interval B.
b. during interval C.
c. during interval D.
78. During interval C, you can
conclude for certain that the
plane is
Apparent…
If the metal sphere on the Van de Graff has a charge of 0.14 Coulombs and the person has a mass of 62 kg, how much excess charge would the person need in order to levitate at a distance 25 cm from the center of the charged metal sphere? Assume you can treat both the person and the metal sphere as point charges a distance 25 cm from each other
Chapter 26 Solutions
PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
Ch. 26 - Explain why birds can sit on power lines safely,...Ch. 26 - Discuss the advantages and disadvantages of...Ch. 26 - If all you have is a 120-V line, would it be...Ch. 26 - Two lightbulbs of resistance R1 and R2 (R2 R1)...Ch. 26 - Household outlets are often double outlets. Are...Ch. 26 - With two identical lightbulbs and two identical...Ch. 26 - If two identical resistors are connected in series...Ch. 26 - You have a single 60-W bulb on in your room. How...Ch. 26 - Compare and discuss the formulas for resistors and...Ch. 26 - When applying Kirchhoffs loop rule (such as in...
Ch. 26 - For what use are batteries connected in series?...Ch. 26 - Can the terminal voltage of a battery ever exceed...Ch. 26 - Explain in detail how you could measure the...Ch. 26 - In an RC circuit, current flows from the battery...Ch. 26 - Given the circuit shown in Fig. 2634, use the...Ch. 26 - What is the main difference between an analog...Ch. 26 - What would happen if you mistakenly used an...Ch. 26 - Explain why an ideal ammeter would have zero...Ch. 26 - A voltmeter connected across a resistor always...Ch. 26 - A small battery-operated flashlight requires a...Ch. 26 - (II) A 1.5-V dry cell can be tested by connecting...Ch. 26 - (I) Three 45- lightbulbs and three 65- lightbulbs...Ch. 26 - (III) Consider the network of resistors shown in...Ch. 26 - (III) You are designing a wire resistance heater...Ch. 26 - (III) Determine the time constant for charging the...Ch. 26 - Suppose that you wish to apply a 0.25-V potential...Ch. 26 - For the circuit shown in Fig. 2618a, show that the...Ch. 26 - A Wheatstone bridge is a type of bridge circuit...Ch. 26 - The internal resistance of a 1.35-V mercury cell...Ch. 26 - A solar cell, 3.0 cm square, has an output of 350...Ch. 26 - The current through the 20- resistor in Fig. 2669...
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