Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 20.1, Problem 4dTH
The network A−E above are connected, in turn, to identical batteries as shown. Use the model we have developed to:
• rank the circuits according to equivalent resistance. Explain.
• rank the circuits according to the current through the battery. Explain.
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Select the correct value for each of the quantities listed below.
A capacitor of capacitance C= 2.0 µF is initially charged with charge Qo = 6.0 µC. The
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capacitor is then discharged by connecting it to a resistor of resistance R = 5.0 MN.
V V.
• The initial voltage of this capacitor is [Select ]
At time t = 20 s:
• the charge on the capacitor is Q = [Select ]
µC,
• the voltage across the capacitor is AV= [Select]
Y V,
• the current in the circuit is I =
[ Select ]
[ Select ]
and the energy stored in the capacitor is U =
Show all work for this question on your paper and PDF upload. There is nothing to submit in this question section for this
problem.
Two resistors, 25 Q, 37.5 0, and in parallel. That combination is in series with an unknown
resistor R. This parallel-series combination is connected to a 12 V battery. The total current
flowing through the battery is 0.60 A.
a) Draw the circuit diagram for this arrangement.
• Include a voltmeter showing the measurement of the unknown resistor R.
• Include an ammeter to show the current through the 25 Q resistor.
b) Determine the value of resistance R.
c) Determine the current through the unknown resistor.
During an action potential, Na+ ions move into the
2
cell at a rate of about 3 × 10¯7mol/m² . • S.
Part A
How much power must be produced by the "active Na+ pumping" system to produce this flow
against a +30-mV potential difference? Assume that the axon is 80 cm long and 30 μm in
diameter.
Express your answer using two significant figures.
Chapter 20 Solutions
Tutorials in Introductory Physics
Ch. 20.1 - In tutorial, you compared the relative brightness...Ch. 20.1 - Use the model for electric current to rank the...Ch. 20.1 - Rang the brightness of the bulbs. Explain your...Ch. 20.1 - A wire is now added to the circuit as shown. i....Ch. 20.1 - Rank the networks according to their equivalent...Ch. 20.1 - How does adding a single bulb to a circuit in...Ch. 20.1 - How does adding a single bulb to a circuit in...Ch. 20.1 - The network AE above are connected, in turn, to...Ch. 20.1 - Rank the bulbs in order from brightest to dimmest....Ch. 20.1 - Suppose that a switch has been added to the...
Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - The circuit at right consists of a bulb in series...Ch. 20.2 - In the circuit at right, the voltage across bulb 1...Ch. 20.2 - Prob. 2bTHCh. 20.2 - Box A and box B are now interchanged. It is...Ch. 20.2 - Consider the circuit as shown. i. Rank bulbs A, B,...Ch. 20.2 - b. A student cuts the write between bulbs A and C...Ch. 20.2 - Consider the following discussion between two...Ch. 20.2 - Rank bulbs 16 in order or brightness. Explain your...Ch. 20.2 - Rank the voltages across the bulbs. Explain your...Ch. 20.2 - Write an equation that relates the voltage across...Ch. 20.2 - Bulb 1 is removed from its socket. i. Does the...Ch. 20.3 - Describe the behavior of the bulb in the two...Ch. 20.3 - A second identical bulb is flow added to the...Ch. 20.3 - Just after the switch is closed: • what is the...Ch. 20.3 - A long time after the switch is closed: • rank the...Ch. 20.3 - Summarize your results by describing the behavior...
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