CONCEPTUAL PHYSICS LL FD
12th Edition
ISBN: 9780135745816
Author: Hewitt
Publisher: PEARSON
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Chapter 9, Problem 84RCQ
To determine
The value of ‘g’ inside Earth at half its radius.
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In each of the following, solve the problem stated. Express your answers in three significant figures. No unit is
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1. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points)
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2. Compute for the total power dissipation of the circuit in previous item. (1 point)
3. Use Maxwell's Mesh to find Ix and VAB for the circuit shown. (3 points)
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4. Calculate all the currents in each branch using Maxwell's Mesh for the circuit shown. (3 points)
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If the mass of substance (1 kg), initial temperature (125˚C), the final temperature (175˚C) and the total volume of a closed container (1 m3) remains constant in two experiments, but one experiment is done with water ( ) and the other is done with nitrogen ( ). What is the difference in the change in pressure between water and nitrogen?
Using the simplified energy balance in Equation 1, suppose there is heat transfer of 40.00 J to a system, while the system does 10.00 J of work. Later, there is heat transfer of 25.00 J out of the system while 4.00 J of work is done on the system. What is the net change in internal energy of the system?
Chapter 9 Solutions
CONCEPTUAL PHYSICS LL FD
Ch. 9 - Prob. 1RCQCh. 9 - What is the Newtonian synthesis?Ch. 9 - 3. In what sense does the Moon “fall”?
Ch. 9 - 4. State Newton’s law of universal gravitation....Ch. 9 - Prob. 5RCQCh. 9 - Prob. 6RCQCh. 9 - Prob. 7RCQCh. 9 - Prob. 8RCQCh. 9 - Prob. 9RCQCh. 9 - Where do you weigh more: at the bottom of Death...
Ch. 9 - Prob. 11RCQCh. 9 - 12. Would the springs inside a bathroom scale be...Ch. 9 - 13. When is your weight measured as mg?
Ch. 9 - Prob. 14RCQCh. 9 - Prob. 15RCQCh. 9 - Prob. 16RCQCh. 9 - Prob. 17RCQCh. 9 - Prob. 18RCQCh. 9 - Prob. 19RCQCh. 9 - Prob. 20RCQCh. 9 - Prob. 21RCQCh. 9 - Prob. 22RCQCh. 9 - Prob. 23RCQCh. 9 - Prob. 24RCQCh. 9 - Prob. 25RCQCh. 9 - Prob. 26RCQCh. 9 - If Earth shrank but there was no change in its...Ch. 9 - Prob. 28RCQCh. 9 - Prob. 29RCQCh. 9 - 30. What was the cause of perturbations discovered...Ch. 9 - Prob. 31RCQCh. 9 - Prob. 32RCQCh. 9 - Prob. 33RCQCh. 9 - Prob. 34RCQCh. 9 - Prob. 35RCQCh. 9 - Prob. 36RCQCh. 9 - Prob. 37RCQCh. 9 - Prob. 38RCQCh. 9 - 39. Suppose you stood atop a ladder so tall that...Ch. 9 - 40. Show that the gravitational force between two...Ch. 9 - 41. Show that there is no change in the force of...Ch. 9 - Prob. 42RCQCh. 9 - 43. Many people mistakenly believe that astronauts...Ch. 9 - Newton’s universal law of gravity tells us that...Ch. 9 - 45. The planet and its moon gravitationally...Ch. 9 - Prob. 46RCQCh. 9 - 47. Pretend you fall into a hole bored completely...Ch. 9 - 48. Rank the average gravitational forces from...Ch. 9 - Prob. 49RCQCh. 9 - Prob. 50RCQCh. 9 - 51. Gravitational force acts on all bodies in...Ch. 9 - 52. What would be the path of the Moon if somehow...Ch. 9 - Prob. 53RCQCh. 9 - Prob. 54RCQCh. 9 - Prob. 55RCQCh. 9 - 56. An apple falls because of the gravitational...Ch. 9 - Prob. 57RCQCh. 9 - 58. Is the acceleration due to gravity more or...Ch. 9 - 59. An astronaut lands on a planet that has the...Ch. 9 - 60. An astronaut lands on a planet that has twice...Ch. 9 - 61. If Earth somehow expanded to a larger radius,...Ch. 9 - 62. Why does a person in free fall experience...Ch. 9 - Prob. 63RCQCh. 9 - Prob. 64RCQCh. 9 - Prob. 65RCQCh. 9 - 66. What two forces act on you while you are in a...Ch. 9 - 67. If you were in a freely falling elevator and...Ch. 9 - Why does a bungee jumper feel weightless during...Ch. 9 - 69. Your friend says that the primary reason...Ch. 9 - 70. An astronaut in the International Space...Ch. 9 - Prob. 71RCQCh. 9 - 72. Stand on a bathroom scale on a level floor,...Ch. 9 - Prob. 73RCQCh. 9 - If somebody tugged hard on your shirt sleeve, it...Ch. 9 - 75. Most people today know that the ocean tides...Ch. 9 - Prob. 76RCQCh. 9 - 77. Would ocean tides exist if the gravitational...Ch. 9 - 78. Why aren’t high ocean tides exactly 12 hours...Ch. 9 - 79. With respect to spring and neap ocean tides,...Ch. 9 - Prob. 80RCQCh. 9 - Prob. 81RCQCh. 9 - 82. The human body is composed mostly of water....Ch. 9 - 83. The value of g at Earth’s surface is about 10...Ch. 9 - Prob. 84RCQCh. 9 - 85. If Earth were of uniform density, would your...Ch. 9 - Prob. 86RCQCh. 9 - Prob. 87RCQCh. 9 - Prob. 88RCQCh. 9 - Prob. 89RCQCh. 9 - Prob. 90RCQCh. 9 - 91. Somewhere between Earth and the Moon, gravity...Ch. 9 - 92. Earth and the Moon are attracted to each...Ch. 9 - Prob. 93RCQCh. 9 - Prob. 94RCQCh. 9 - Prob. 95RCQCh. 9 - Prob. 96RCQCh. 9 - Prob. 97RCQCh. 9 - Prob. 98RCQCh. 9 - Prob. 99RCQCh. 9 - Prob. 100RCQCh. 9 - Prob. 101RCQCh. 9 - Prob. 102RCQCh. 9 - Prob. 103RCQCh. 9 - Prob. 104RCQCh. 9 - Prob. 105RCQCh. 9 - Prob. 106RCQCh. 9 - Prob. 107RCQCh. 9 - Prob. 108RCQCh. 9 - A new discussion partner says that the...Ch. 9 - Prob. 110RCQ
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- • Nature of Resistance Temperature-Resistance Relationship Ohm's Law, Energy and Power Kirchhoff's Law • • Maxwell's Mesh Analysis 1. The steel of the third rail of a railway system has a resistivity of 21.4 μ-cm. If its cross-sectional area is 8.2 in², calculate the resistance per mile of rail, neglecting the effect of joints between sections. (1 point) 2. An incandescent lamp has a tungsten filament whose resistance is 96 at its operating temperature of 2900°C. Calculate the filament resistance when the lamp is disconnected from the electric source, under which condition its temperature is 24°C. (Use do = 0.0045 02/°C for tungsten) (1 point) 3. For the circuit shown, find the following: 50 V 602 10 V 702 a. the value of resistor R. (1 point) b. the equivalent resistance with respect to the 50-V source. (1 point) 4. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points) A 5V 2 В -ний C 4 6 VT ww F E 5. Use Maxwell's Mesh to find I, and VAB…arrow_forwardFor 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... 8. Kirchhoff's Laws (5 pts) 9. Maxwell's Mesh Analysis (5 pts) A 8 V 10 V B + 20 Ω 3Ω 202 wwww C wwww 202 + 50 www 12 Varrow_forward• 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…arrow_forward
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