Physical Science
11th Edition
ISBN: 9780077862626
Author: Bill Tillery, Stephanie J. Slater, Timothy F. Slater
Publisher: McGraw-Hill Education
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Chapter 4, Problem 15PEB
To determine
The amount of work ideally accomplished by the heat pump if the input heat is
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A positively charged disk has a uniform charge per unit area σ.
dq
R
P
x
The total electric field at P is given by the following.
Ek [2 -
x
(R² + x2) 1/2
Sketch the electric field lines in a plane perpendicular to the plane of the disk passing through its center.
Consider a closed triangular box resting within a horizontal electric field of magnitude E = 8.02 104 N/C as shown in the figure below.
A closed right triangular box with its vertical side on the left and downward slope on the right rests within a horizontal electric field vector E that points from left to right. The box has a height of 10.0 cm and a depth of 30.0 cm. The downward slope of the box makes an angle of 60 degrees with the vertical.
(a) Calculate the electric flux through the vertical rectangular surface of the box. kN · m2/C(b) Calculate the electric flux through the slanted surface of the box. kN · m2/C(c) Calculate the electric flux through the entire surface of the box. kN · m2/C
The figure below shows, at left, a solid disk of radius R = 0.600 m and mass 75.0 kg.
Tu
Mounted directly to it and coaxial with it is a pulley with a much smaller mass and a radius of r = 0.230 m. The disk and pulley assembly are on a frictionless axle. A belt is wrapped around the pulley and connected to an electric motor as shown on the right. The turning motor gives the disk
and pulley a clockwise angular acceleration of 1.67 rad/s². The tension T in the upper (taut) segment of the belt is 145 N.
(a) What is the tension (in N) in the lower (slack) segment of the belt?
N
(b) What If? You replace the belt with a different one (one slightly longer and looser, but still tight enough that it does not sag). You again turn on the motor so that the disk accelerates clockwise. The upper segment of the belt once again has a tension of 145 N, but now the tension in
the lower belt is exactly zero. What is the magnitude of the angular acceleration (in rad/s²)?
rad/s²
Chapter 4 Solutions
Physical Science
Ch. 4 - 1. The Fahrenheit thermometer scale is
a. more...Ch. 4 - Prob. 2ACCh. 4 - Prob. 3ACCh. 4 - 4. External energy refers to the
a. energy that...Ch. 4 - Prob. 5ACCh. 4 - The specific heat of copper is 0.093 cal/gC, and...Ch. 4 - 7. The specific heat of water is 1.00 cal/gC°, and...Ch. 4 - Prob. 8ACCh. 4 - Prob. 9ACCh. 4 - Prob. 10AC
Ch. 4 - Prob. 11ACCh. 4 - Prob. 12ACCh. 4 - 13. The energy supplied to a system in the form of...Ch. 4 - Prob. 14ACCh. 4 - Prob. 15ACCh. 4 - Prob. 16ACCh. 4 - Prob. 17ACCh. 4 - Prob. 18ACCh. 4 - Prob. 19ACCh. 4 - Prob. 20ACCh. 4 - 21. The transfer of heat that takes place because...Ch. 4 - 22. Latent heat is “hidden” because it
a. goes...Ch. 4 - Prob. 23ACCh. 4 - 24. A heat engine is designed to
a. move heat from...Ch. 4 - 25. The work that a heat engine is able to...Ch. 4 - Prob. 26ACCh. 4 - Prob. 27ACCh. 4 - Prob. 28ACCh. 4 - 29. The cheese on a hot pizza takes a long time to...Ch. 4 - 30. The specific heat of copper is roughly three...Ch. 4 - Prob. 31ACCh. 4 - 32. Conduction best takes place in a
a. solid.
b....Ch. 4 - 33. Convection best takes place in a (an)
a....Ch. 4 - Prob. 34ACCh. 4 - Prob. 35ACCh. 4 - Prob. 36ACCh. 4 - Prob. 37ACCh. 4 - 38. At temperatures above freezing, the...Ch. 4 - Prob. 39ACCh. 4 - Prob. 40ACCh. 4 - Prob. 41ACCh. 4 - 42. The second law of thermodynamics tells us that...Ch. 4 - 43. The heat death of the universe in the future...Ch. 4 - 1. What is temperature? What is heat?
Ch. 4 - 2. Explain why most materials become less dense as...Ch. 4 - 3. Would the tight packing of more insulation,...Ch. 4 - 4. A true vacuum bottle has a double-walled,...Ch. 4 - 5. Why is cooler air found in low valleys on calm...Ch. 4 - 6. Why is air a good insulator?
Ch. 4 - 7. Explain the meaning of the mechanical...Ch. 4 - 8. What do people really mean when they say that a...Ch. 4 - 9. A piece of metal feels cooler than a piece of...Ch. 4 - 10. Explain how the latent heat of fusion and the...Ch. 4 - 11. What is condensation? Explain, on a molecular...Ch. 4 - 12. Which provides more cooling for a Styrofoam...Ch. 4 - 13. Explain why a glass filled with a cold...Ch. 4 - 14. Explain why a burn from 100°C steam is more...Ch. 4 - Briefly describe, using sketches as needed, how a...Ch. 4 - 16. Which has the greatest entropy: ice, liquid...Ch. 4 - 17. Suppose you use a heat engine to do the work...Ch. 4 - 1. Considering the criteria for determining if...Ch. 4 - Prob. 2FFACh. 4 - 3. Gas and plasma are phases of matter, yet gas...Ch. 4 - Prob. 4FFACh. 4 - 5. This chapter contains information about three...Ch. 4 - Prob. 6FFACh. 4 - 7. Explore the assumptions on which the “heat...Ch. 4 - Prob. 1IICh. 4 - Prob. 1PEBCh. 4 - Prob. 2PEBCh. 4 - Prob. 3PEBCh. 4 - 4. A 1.0 kg metal head of a geology hammer strikes...Ch. 4 - 5. A 60.0 kg person will need to climb a 10.0 m...Ch. 4 - 6. A 50.0 g silver spoon at 20.0°C is placed in a...Ch. 4 - 7. If the silver spoon placed in the coffee in...Ch. 4 - 8. How many minutes would be required for a 300.0...Ch. 4 - Prob. 9PEBCh. 4 - 10. A 1.00 kg block of ice at 0°C is added to a...Ch. 4 - Prob. 11PEBCh. 4 - Prob. 12PEBCh. 4 - Prob. 13PEBCh. 4 - 14. A heat engine converts 100.0 cal from a supply...Ch. 4 - Prob. 15PEB
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