CONCEPTUAL PHYSICS LL FD
12th Edition
ISBN: 9780135745816
Author: Hewitt
Publisher: PEARSON
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Chapter 8, Problem 93RCQ
To determine
The effect on the length of a day when soil is deposited to the Gulf of Mexico from Mississippi River.
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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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3. Use Maxwell's Mesh to find Ix and VAB 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 8 Solutions
CONCEPTUAL PHYSICS LL FD
Ch. 8 - What are the units of measurement for tangential...Ch. 8 - On a rotating turntable, does tangential speed or...Ch. 8 - A tapered cup rolled on a flat surface makes a...Ch. 8 - How does the tapered rim of a wheel on a railroad...Ch. 8 - 5. What is rotational inertia, and how is it...Ch. 8 - 6. Inertia depends on mass; rotational inertia...Ch. 8 - 7. As distance increases between most of the mass...Ch. 8 - 8. Consider three axes of rotation for a pencil:...Ch. 8 - 9. Which is easier to get swinging: a baseball bat...Ch. 8 - Why does bending your legs when running enable you...
Ch. 8 - 11. Which will have the greater acceleration...Ch. 8 - 12. What does a torque tend to do to an object?
Ch. 8 - 13. What is meant by the “lever arm” of a...Ch. 8 - 14. How do clockwise and counterclockwise torques...Ch. 8 - 15. If you toss a stick into the air, it appears...Ch. 8 - Prob. 16RCQCh. 8 - 17. If you hang at rest by your hands from a...Ch. 8 - Where is the center of mass of a hollow soccer...Ch. 8 - 19. What is the relationship between the center of...Ch. 8 - 20. Why doesn’t the Leaning Tower of Pisa topple...Ch. 8 - 21. In terms of center of gravity, support base,...Ch. 8 - 22.When you whirl a can at the end of a string in...Ch. 8 - 23. Is it an inward force or an outward force that...Ch. 8 - 24. If the string that holds a whirling can in its...Ch. 8 - 25. If you are not wearing a seat belt in a car...Ch. 8 - 26. Why is centrifugal force in a rotating frame...Ch. 8 - 27. How can gravity be simulated in an orbiting...Ch. 8 - 28. Distinguish between linear momentum and...Ch. 8 - 29. What is the law of inertia for rotating...Ch. 8 - If a skater who is spinning pulls her arms in so...Ch. 8 - Contact Grandpa and tell him how you’re learning...Ch. 8 - Prob. 32RCQCh. 8 - Prob. 33RCQCh. 8 - Prob. 34RCQCh. 8 - Prob. 35RCQCh. 8 - Prob. 36RCQCh. 8 - Prob. 37RCQCh. 8 - Torque = lever arm ×...Ch. 8 - 39. Calculate the torque produced by the same 50-N...Ch. 8 - Prob. 40RCQCh. 8 - 41. Calculate the force of friction that keeps an...Ch. 8 - Angular momentum =...Ch. 8 - 43. If a persons speed doubles and all else...Ch. 8 - 44. The diameter of the base of a tapered...Ch. 8 - To tighten a bolt, you push with a force of 80 N...Ch. 8 - 46. The rock and meterstick balance at the 25-cm...Ch. 8 - In one of the photos at the beginning of this...Ch. 8 - 48. An ice puck of mass m revolves on an icy...Ch. 8 - 49. If a trapeze artist rotates once each second...Ch. 8 - A small space telescope at the end of a tether...Ch. 8 - 51. The three cups are rolled on a level surface....Ch. 8 - 52. Three types of rollers are placed on slightly...Ch. 8 - 53. Beginning from a rest position, a solid disk...Ch. 8 - 54. You hold a meterstick at one end with the same...Ch. 8 - 55. Three physics majors in good physical shape...Ch. 8 - Prob. 56RCQCh. 8 - Prob. 57RCQCh. 8 - Prob. 58RCQCh. 8 - 59. The wheels of railroad trains are tapered, a...Ch. 8 - Prob. 60RCQCh. 8 - 61. The front wheels of a racing vehicle are...Ch. 8 - 62. Which will have the greater acceleration...Ch. 8 - Prob. 63RCQCh. 8 - 64. Is the net torque changed when a partner on a...Ch. 8 - Prob. 65RCQCh. 8 - 66. When you pedal a bicycle, maximum torque is...Ch. 8 - Prob. 67RCQCh. 8 - Prob. 68RCQCh. 8 - Prob. 69RCQCh. 8 - Prob. 70RCQCh. 8 - 71. Explain why a long pole is more beneficial to...Ch. 8 - Prob. 72RCQCh. 8 - Prob. 73RCQCh. 8 - Prob. 74RCQCh. 8 - Prob. 75RCQCh. 8 - Prob. 76RCQCh. 8 - Prob. 77RCQCh. 8 - Prob. 78RCQCh. 8 - 79. The centers of gravity of the three trucks...Ch. 8 - Prob. 80RCQCh. 8 - Prob. 81RCQCh. 8 - Prob. 82RCQCh. 8 - 83. When you are in the front passenger seat of a...Ch. 8 - Prob. 84RCQCh. 8 - Prob. 85RCQCh. 8 - Prob. 86RCQCh. 8 - 87. The occupant inside a rotating space habitat...Ch. 8 - Prob. 88RCQCh. 8 - A motorcyclist is able to ride on the vertical...Ch. 8 - 90. The sketch shows a conical pendulum. The bob...Ch. 8 - Prob. 91RCQCh. 8 - Prob. 92RCQCh. 8 - Prob. 93RCQCh. 8 - 94. If all of Earth’s inhabitants moved to the...Ch. 8 - Prob. 95RCQCh. 8 - If the world’s populations moved to the North Pole...Ch. 8 - Prob. 97RCQCh. 8 - 98. Why does a typical small helicopter with a...Ch. 8 - 99. We believe that our galaxy was formed from a...Ch. 8 - Prob. 100RCQCh. 8 - Prob. 101RCQCh. 8 - Prob. 102RCQCh. 8 - Prob. 103RCQCh. 8 - 104.When a car drives off a cliff it rotates...Ch. 8 - 105. Discuss why a car noses up when accelerating...Ch. 8 - 106. Discuss how a ramp would help you to...Ch. 8 - 107. Which will roll down an incline faster: a can...Ch. 8 - 108. Why are lightweight tires preferred in...Ch. 8 - 109. A youngster who has entered a soapbox derby...Ch. 8 - 110. The spool is pulled in three ways, as shown....Ch. 8 - 111. Nobody at the playground wants to play with...Ch. 8 - 112. How can the three bricks be stacked so that...Ch. 8 - 113. A long track balanced like a seesaw supports...Ch. 8 - With respect to Diana’s finger, where is the...Ch. 8 - When a long-range cannonball is fired toward the...Ch. 8 - Most often we say that force causes acceleration....
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- Fill in blanksarrow_forwardA rock is dropped from a height of 2.00 m. Determine the velocity of the rock just before it hits the ground. If the momentum of the rock just before hitting the ground is 14.0 kg m/s, what is the mass of the rock? Is the collision between the rock and the ground elastic or inelastic? Explain.arrow_forwardDescribe how the momentum of a single ball changes as it free falls from a height of approximately 1 m, collides with a hard floor, and rebounds.arrow_forward
- • 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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