Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780133953145
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Chapter 28, Problem 11CQ
Bulbs A and B in FIGURE Q28.11 are identical, and both are glowing. Bulb B is removed from its socket. Does the potential difference
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Initially, bulbs A and B shown are both glowing. Bulb B is then removed from its socket. Does removing bulb B cause the potential difference ΔV12 between points 1 and 2 to increase, decrease, stay the same, or become zero? Explain.
1. It consists of two concentric spherical shells
of radii r1 = 9.5cm and r2 > r1. The capacitance
of the capacitor is given as 110 pF. 100 V
potential difference between spherical shells
What is the surface charge density of the
spherical shell with radius r2, C/m2? is it?
2.A current of 1.67 A flows through a 70 cm long
copper wire with a radius of 0.51 mm. Copper
free electron density of the wire 8.5 x 1028
electrons/m3 since an electron is a wire How
long does it take to get from one end to the
other? ( The charge of the electron is 1.6 x 10
-19C)
%3D
Note: ɛ0 = 8.85 × 10^ -12 C^ 2
%3D
/Nm^2 ve u0 = 47t × 10^ -7 Tm/A
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If 5.0 x 10 electrons pass through a 63.2 O resistor in 10 min, what is the potential difference across the resistor? use the
charge of the electron to be -1.6 × 10-19 C.
Select one:
OA. 12.64
OB. 21.06
OC 505.60
OD.84.26
OE 5056.00
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Chapter 28 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Ch. 28 - Rank in order, from largest to smallest, the...Ch. 28 - The tip of a flashlight bulb is touching the top...Ch. 28 - The wire is broken on the right side of the...Ch. 28 - The circuit of FIGURE Q28.4 has two resistors,...Ch. 28 - The circuit of FIGURE Q28.5 has two resistors,...Ch. 28 - Rank in order, from largest to smallest, the...Ch. 28 - Are the two resistors in FIGURE Q28.7 in series or...Ch. 28 - A battery with internal resistance r is connected...Ch. 28 - Initially bulbs A and B in FIGURE Q28.9 are...Ch. 28 - Bulbs A. B, and C in FIGURE Q28.1O axe identical,...
Ch. 28 - Bulbs A and B in FIGURE Q28.11 are identical, and...Ch. 28 - Prob. 12CQCh. 28 - FIGURE Q28.13 shows the voltage as a function of...Ch. 28 - Prob. 1EAPCh. 28 - Draw a circuit diagram for the circuit of FIGURE...Ch. 28 - Prob. 3EAPCh. 28 - Prob. 4EAPCh. 28 - a. What are the magnitude and direction of the...Ch. 28 - What is the magnitude of the potential difference...Ch. 28 - Prob. 7EAPCh. 28 - Prob. 8EAPCh. 28 - A 60 W lightbulb and a 100 W lightbulb are placed...Ch. 28 - Prob. 10EAPCh. 28 - The five identical bulbs in FIGURE EX2B.11 are all...Ch. 28 - Prob. 12EAPCh. 28 - Prob. 13EAPCh. 28 - A typical American family uses kWh of electricity...Ch. 28 - A waterbed heater uses 450 W of power. It is on 25...Ch. 28 - Prob. 16EAPCh. 28 - Prob. 17EAPCh. 28 - Prob. 18EAPCh. 28 - 19. The voltage across the terminals of a V...Ch. 28 - Prob. 20EAPCh. 28 - Prob. 21EAPCh. 28 - 22. Two of the three resistors in FIGURE EX28.22...Ch. 28 - What is the value of resistor R in FIGURE EX28.23?Ch. 28 - Prob. 24EAPCh. 28 - What is the equivalent resistance between points a...Ch. 28 - What is the equivalent resistance between points a...Ch. 28 - Prob. 27EAPCh. 28 - Prob. 28EAPCh. 28 - Prob. 29EAPCh. 28 - Prob. 30EAPCh. 28 - Prob. 31EAPCh. 28 - Prob. 32EAPCh. 28 - Prob. 33EAPCh. 28 - What is the time constant for the discharge of the...Ch. 28 - A 10F capacitor initially charged to 20C is...Ch. 28 - Prob. 36EAPCh. 28 - Prob. 37EAPCh. 28 - A capacitor is discharged through a resistor. The...Ch. 28 - Prob. 39EAPCh. 28 - 40. A refrigerator has a 1000 W compressor, but...Ch. 28 - Prob. 41EAPCh. 28 - An electric eel develops a potential difference...Ch. 28 - You have a resistor, a resistor, a resistor, and a...Ch. 28 - A 2.0 -m-long, 1.0 -mm-diameter wire has a...Ch. 28 - What is the equivalent resistance between points a...Ch. 28 - What are the emf and internal resistance of the...Ch. 28 - A string of holiday lights can be wired in series,...Ch. 28 - The circuit shown in FIGURE P28.48 is inside a 15...Ch. 28 - Suppose you have resistors 2.5,3.5, and 4.5 and a...Ch. 28 - A lightbulb is in series with a resistor. The...Ch. 28 - Prob. 51EAPCh. 28 - Prob. 52EAPCh. 28 - Prob. 53EAPCh. 28 - Prob. 54EAPCh. 28 - What are the battery current Ibatand the potential...Ch. 28 - A battery is a voltage source, always providing...Ch. 28 - A circuit you’re building needs an ammeter that...Ch. 28 - For the circuit shown in FIGURE P28.58, find the...Ch. 28 - For the circuit shown in FIGURE P28.59, find the...Ch. 28 - For the circuit shown in FIGURE P28.60, find the...Ch. 28 - What is the current through the 20 resistor in...Ch. 28 - For the circuit shown in FIGURE P28.62, find the...Ch. 28 - What is the current through the 10 resistor in...Ch. 28 - For what emf does the 200 resistor in FIGURE...Ch. 28 - Prob. 65EAPCh. 28 - Prob. 66EAPCh. 28 - Prob. 67EAPCh. 28 - II A circuit you're using discharges a 20F...Ch. 28 - A 150F defibrillator capacitor is charged to 1500V...Ch. 28 - Prob. 70EAPCh. 28 - A 0.25F capacitor is charged to 50 V. It is then...Ch. 28 - Prob. 72EAPCh. 28 - Prob. 73EAPCh. 28 - The capacitors in FIGURE P28.74 are charged and...Ch. 28 - Prob. 75EAPCh. 28 - Prob. 76EAPCh. 28 - Prob. 77EAPCh. 28 - Prob. 78EAPCh. 28 - Prob. 79EAPCh. 28 - Prob. 80EAPCh. 28 - Prob. 81EAPCh. 28 - Prob. 82EAP
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- A charge Q is placed on a capacitor of capacitance C. The capacitor is connected into the circuit shown in Figure P26.37, with an open switch, a resistor, and an initially uncharged capacitor of capacitance 3C. The switch is then closed, and the circuit comes to equilibrium. In terms of Q and C, find (a) the final potential difference between the plates of each capacitor, (b) the charge on each capacitor, and (c) the final energy stored in each capacitor. (d) Find the internal energy appearing in the resistor. Figure P26.37arrow_forward(a) Calculate the potential difference between points a and b in Figure P27.37 and (b) identify which point is at the higher potential. Figure P27.37arrow_forwardIf 5.0 x 1021 electrons pass through a 20.2 Q resistor in 10 min, what is the potential difference across the resistor? use the charge of the electron to be -1.6 x 1019 Carrow_forward
- If 5.0 × 1021 electrons pass through a 30.1 Q resistor in 10 min, what is the potential difference across the resistor? use the charge of the electron to be -1.6 x 10-19 c. Select one: A. 6.02 B. 2408.00 C. 40.13 D. 240.80 E. 10.03arrow_forwardE2 R1 R2 2. Find the charge on the capacitor after the switch has been left open for some time, then closed for some period of time. We can assume that C = 2 µF, with batteries of values E1 R2 = 0.25 N. 2V and E2 =1V, and resistor values R1 = 0.5 N and Sarrow_forwardA2.0 µF capacitor is charged to 12 Vand then discharged througha 4.0 M2 resistor. How long will it take for the voltage across the capacitor to drop to 3.0v? Hint: The unknown time is in "log jail". Break it out with the inverse function of the exponential. O 8.0 s O 24 s O 11 s O 22 sarrow_forward
- The circuit in the figure below has been connected for a long time. Let R, 8.80 N and R, 3.80 Q. 1.00 N 1.00 µF 10.0 V R2 2.00 N (a) What is the potential difference across the capacitor? V (b) If the battery is disconnected from the circuit, over what time interval does the capacitor discharge to one-tenth its initial voltage? usarrow_forwardV07arrow_forwardTwo capacitors C₁ = 40 µF and C₂ = 20 µF and two resistors R₁ = 80 ≤ and R₂ = 55 ≤ are connected to a 3-V battery as shown in the figure below. What is the potential difference between points a and b? R₁ R₂ а mina ^^^ HI C₁ b V HE €₂ The potential difference, V₁-Vb = Units Select an answer ✓arrow_forward
- 10:07 P 6 1 A Imssb1.mutah.edu.jo/mod/quiz P Flag question What is the potential difference ( in volts) across C2 when C, = 5.0 µF, C2 = 15 µF, C3 = 30 µF, and Vo = 25.8 V? C, Vo Select one: A. 23.74 B. 17.20 C. 12.90 O D. 8.60 E. 38.70 ENGLISH ARABIC +arrow_forwardChapter 26, Problem 026 In Figure (a) below, a 10.80 V battery is connected to a resistive strip that consists of three sections with the same cross-sectional areas but different conductivities. Figure (b) gives the electric potential V(x) versus position x along the strip. The horizontal scale is set by xg = 8.24 mm. Section 3 has conductivity 3.014 x 107 (2.m)1. What is the conductivity of section (a) 1 and (b) 2? x= 0 x= Xs (a) (b) x (mm) (a) Number Units (b) Number Units (A) Aarrow_forwardA very long wire has a linear charge densityuniform l. A voltmeter is used to measure the potential difference and it is found that when an instrument sensor is placed2.50 cm from the wire and the other sensor is 1.00 cm further awayof the wire, the apparatus reads 575 V. a) What is the value of l? b) Yes nowone sensor is placed 3.50 cm from the wire and the other 1.00 cm moreaway, will the voltmeter read 575 V? If not, will the reading beabove or below 575 V? Why? c) If both sensors are located 3.50 cm from the wire, but 17.0 cm from one of the other, what will be thevoltmeter reading?arrow_forward
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