EBK COLLEGE PHYSICS
2nd Edition
ISBN: 9780134605500
Author: ETKINA
Publisher: PEARSON CO
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Textbook Question
Chapter 15, Problem 12CQ
Suggest practical ways for determining the specific heats of different liquids and solids.
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Three slits, each separated from its neighbor by d = 0.06 mm, are illuminated by a coherent light source of
wavelength 550 nm. The slits are extremely narrow. A screen is located L = 2.5 m from the slits. The
intensity on the centerline is 0.05 W. Consider a location on the screen x = 1.72 cm from the centerline.
a) Draw the phasors, according to the phasor model for the addition of harmonic waves, appropriate for this
location.
b) From the phasor diagram, calculate the intensity of light at this location.
A Jamin interferometer is a device for measuring or for comparing the indices of refraction of gases. A beam
of monochromatic light is split into two parts, each of which is directed along the axis of a separate cylindrical
tube before being recombined into a single beam that is viewed through a telescope. Suppose we are given the
following,
•
Length of each tube is L = 0.4 m.
• λ= 598 nm.
Both tubes are initially evacuated, and constructive interference is observed in the center of the field of view. As
air is slowly let into one of the tubes, the central field of view changes dark and back to bright a total of 198
times.
(a) What is the index of refraction for air?
(b) If the fringes can be counted to ±0.25 fringe, where one fringe is equivalent to one complete cycle of
intensity variation at the center of the field of view, to what accuracy can the index of refraction of air be
determined by this experiment?
Chapter 15 Solutions
EBK COLLEGE PHYSICS
Ch. 15 - Review Question 15.1 Imagine that a balloon...Ch. 15 - Prob. 2RQCh. 15 - Prob. 3RQCh. 15 - Review Question 15.4 Describe two situations in...Ch. 15 - Prob. 5RQCh. 15 - Review Question 15.6 Why are the units for...Ch. 15 - Prob. 7RQCh. 15 - An ideal gas in a container is separated with a...Ch. 15 - 2. A container of gas has a movable piston, which...Ch. 15 - Prob. 3MCQ
Ch. 15 - Prob. 4MCQCh. 15 - 5. How much heat is stored in 10 kg of water at...Ch. 15 - We define the specific heat of a material as the...Ch. 15 - Prob. 7MCQCh. 15 - Figure Q15.8 shows a P-versus-V graph for two...Ch. 15 - 9. An electric heater is keeping the inside of a...Ch. 15 - Match each heating mechanism (left column) with a...Ch. 15 - 11. Your friend says, "Heat rises." Do you agree...Ch. 15 - Suggest practical ways for determining the...Ch. 15 - Suggest practical ways to measure heats of melting...Ch. 15 - Prob. 14CQCh. 15 - 15. Why does an egg take the same time interval to...Ch. 15 - Why does food cook faster in a pressure cooker...Ch. 15 - A potato into which several nails have been pushed...Ch. 15 - Explain why double-paned windows help reduce...Ch. 15 - 19. The water in a paper cup can be boiled by...Ch. 15 - Provide two reasons why blowing across hot soup or...Ch. 15 - 21. Placing a moistened finger in the wind can...Ch. 15 - Why does covering a keg of beer with wet towels on...Ch. 15 - 23. Explain why dogs can cool themselves by...Ch. 15 - 24. Some houses are heated by hot oil or water...Ch. 15 - If on a hot summer day you place one bare foot on...Ch. 15 - 26. A woman has a cup of hot coffee and a small...Ch. 15 - * EST Estimate the thermal energy of the air in...Ch. 15 - A balloon of volume 0.010 m3 is filled with 1.0...Ch. 15 - * Imagine that the helium balloon from the...Ch. 15 - 4. *You accidentally release a helium-filled...Ch. 15 - * Helium in a cylinder with a piston and initially...Ch. 15 - Prob. 7PCh. 15 - 8. * Jeopardy problem A gas process is described...Ch. 15 - 9. * Jeopardy problem A gas process is described...Ch. 15 - 10. Use the first law of thermodynamics to devise...Ch. 15 - Prob. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - 14 *You are making a table for specific heats of...Ch. 15 - Prob. 15PCh. 15 - 16. * BIO EST Body temperature change A drop in...Ch. 15 - 17. * BIO Temperature change of a person A 50-kg...Ch. 15 - Determine the amount of thermal energy provided by...Ch. 15 - 19. EST Estimate the time interval required for a...Ch. 15 - Prob. 20PCh. 15 - * BIO Exercising warms body A 50-kg woman...Ch. 15 - Prob. 22PCh. 15 - * You add 20C water to 0.20 kg of 40C soup After a...Ch. 15 - BIO Cooling a hot child A 30-kg child has a...Ch. 15 - Prob. 25PCh. 15 - 26. * You pour 250 g of tea into a Styrofoam cup,...Ch. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - 29. Determine the energy needed to change a...Ch. 15 - 30. * When of energy is removed from 0.60 kg of...Ch. 15 - Prob. 31PCh. 15 - C that must be added to a cup with 250 g of tea at...Ch. 15 - An ice-making machine removes thermal energy from...Ch. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - 36. How much energy is required to convert (a)...Ch. 15 - 37. Cooling with alcohol rub During a back rub, 80...Ch. 15 - 38. Energy in a lightning flash A lightning flash...Ch. 15 - 39 A kettle containing 0.75 kg of boiling water...Ch. 15 - Prob. 40PCh. 15 - * EST Energy changes when it rains Estimate the...Ch. 15 - 42. * Insulating a house You insulate your house...Ch. 15 - C and the outside temperature is -10C?Ch. 15 - Prob. 44PCh. 15 - 45. While blowing across the bowl of soup in the...Ch. 15 - Prob. 46PCh. 15 - BIO Marathon You are training for a marathon While...Ch. 15 - Prob. 48PCh. 15 - 49. * A canteen is covered with wet canvas. If 15...Ch. 15 - * EST Evaporative cooling Each year a layer of...Ch. 15 - Prob. 51PCh. 15 - BIO Tree leaf A tree leaf of mass of 0.80 g and...Ch. 15 - Warming a spaceship Your friend says that natural...Ch. 15 - Prob. 54PCh. 15 - Which is less dense: dry or wet air? Explain your...Ch. 15 - * BIO Losing liquid while running While running,...Ch. 15 - Prob. 57PCh. 15 - 58. ** EST Global climate change Assume that...Ch. 15 - Prob. 59PCh. 15 - * Standard house 2 On the same day in the same...Ch. 15 - * Standard house 3 Suppose that the following...Ch. 15 - Prob. 62PCh. 15 - ** BIO EST Metabolism warms bedroom Because of its...Ch. 15 - Prob. 65GPCh. 15 - * EST House ventilation For purposes of...Ch. 15 - Prob. 67GPCh. 15 - ** EST Heating an event center with metabolic...Ch. 15 - Prob. 70RPPCh. 15 - Prob. 71RPPCh. 15 - Prob. 72RPPCh. 15 - Prob. 73RPPCh. 15 - Prob. 74RPPCh. 15 - Prob. 75RPPCh. 15 - Prob. 76RPPCh. 15 - Prob. 77RPPCh. 15 - Prob. 78RPPCh. 15 - Prob. 79RPPCh. 15 - Prob. 80RPP
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