Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
4th Edition
ISBN: 9780133942651
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 20, Problem 60EAP
The 2010 Nobel Prize in Physics was awarded for the discovery of graphene, a two-dimensional form of carbon in which the atoms form a two-dimensional crystal-lattice sheet only one atom thick. Predict the molar specific heat of graphene. Give your answer as a multiple of R.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A copper-constantan thermocouple generates
a voltage of 4.75 x 10-3 volts when the
temperature of the hot junction is 110 °C and
the reference junction is kept at 0 °C. If the
voltage is proportional to the difference in
temperature between the junctions, what is
the temperature in degrees Celsius of the hot
junction when the voltage is 2.45 x 10-³ volts?
Number i
eTextbook and Media
GO Tutorial
Units
✪
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.50
cm is suspended inside a large evacuated cavity whose walls are at 290 K.
A. What power input is required to maintain the sphere at 3000 K if heat
conduction by the supports is neglected?
B. If the power input to the sphere is less than the value calculated in the
previous point, what will happen to the equilibrium temperature of the
sphere?
C. Comment qualitatively, with respect to heat transfer, what would
happen if the supports that suspend the sphere are not negligible and the
cavity where the sphere is located is not in vacuum but contains air.
You do an experiment in which you transfer energy to 1.2 moles of a gas and measure it’s change in temperature. You make a graph of the data as shown. The y-axis is the amount of energy added and the x-axis is the temperature.
A) how many moles per molecule does this substance have?
B) is the substance most likely a monatomic gas, diatomic or another type of gas?
Chapter 20 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Ch. 20 - Prob. 1CQCh. 20 - Prob. 2CQCh. 20 - Prob. 3CQCh. 20 - Prob. 4CQCh. 20 - Prob. 5CQCh. 20 - Prob. 6CQCh. 20 - Prob. 7CQCh. 20 - Prob. 8CQCh. 20 - Prob. 9CQCh. 20 - Prob. 1EAP
Ch. 20 - Prob. 2EAPCh. 20 - Prob. 3EAPCh. 20 - Prob. 4EAPCh. 20 - Prob. 5EAPCh. 20 - Prob. 6EAPCh. 20 - Prob. 7EAPCh. 20 - Prob. 8EAPCh. 20 - Prob. 9EAPCh. 20 - Prob. 10EAPCh. 20 - Prob. 11EAPCh. 20 - Prob. 12EAPCh. 20 - Prob. 13EAPCh. 20 - Prob. 14EAPCh. 20 - Prob. 15EAPCh. 20 - Prob. 16EAPCh. 20 - Prob. 17EAPCh. 20 - Prob. 18EAPCh. 20 - Prob. 19EAPCh. 20 - Prob. 20EAPCh. 20 - Prob. 21EAPCh. 20 - Prob. 22EAPCh. 20 - Prob. 23EAPCh. 20 - Prob. 24EAPCh. 20 - Prob. 25EAPCh. 20 - A 10 g sample of neon gas has 1700 J of thermal...Ch. 20 - Prob. 27EAPCh. 20 - A 6.0 m × 8.0 m × 3.0 m room contains air at 20°C....Ch. 20 - Prob. 29EAPCh. 20 - Prob. 30EAPCh. 20 - .0 mol of a monatomic gas interacts thermally with...Ch. 20 - Prob. 32EAPCh. 20 - A rigid container holds 0.20 g of hydrogen gas....Ch. 20 - Prob. 34EAPCh. 20 - .0 mol of monatomic gas A interacts with 3.0 mol...Ch. 20 - Two containers hold several balls. Once a second,...Ch. 20 - Prob. 37EAPCh. 20 - From what height must an oxygen molecule fall in a...Ch. 20 - Dust particles are 10m in diameter. They are...Ch. 20 - Prob. 40EAPCh. 20 - Photons of light scatter off molecules, and the...Ch. 20 - Prob. 42EAPCh. 20 - Prob. 43EAPCh. 20 - a. Find an expression for the vrms of gas...Ch. 20 - Equation 20.3 is the mean free path of a particle...Ch. 20 - Uranium has two naturally occurring isotopes. 238U...Ch. 20 - On earth, STP is based on the average atmospheric...Ch. 20 - .0 × l023 nitrogen molecules collide with a 10 cm2...Ch. 20 - Prob. 49EAPCh. 20 - Prob. 50EAPCh. 20 - A 100 cm3 box contains helium at a pressure of 2.0...Ch. 20 - 2.0 g of helium at an initial temperature of 300 K...Ch. 20 - Prob. 53EAPCh. 20 - Scientists studying the behavior of hydrogen at...Ch. 20 - Prob. 55EAPCh. 20 - Prob. 56EAPCh. 20 - In the discussion following Equation 20.43 it was...Ch. 20 - Prob. 58EAPCh. 20 - n moles of a diatomic gas with Cv= 52 has initial...Ch. 20 - The 2010 Nobel Prize in Physics was awarded for...Ch. 20 - Prob. 61EAPCh. 20 - Prob. 62EAPCh. 20 - 63. moles of a monatomic gas and moles of a...Ch. 20 - Prob. 64EAPCh. 20 - 65. An experiment you're designing needs a gas...Ch. 20 - 66. Consider a container like that shown in...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A 0.500-m3 container holding 3.00 mol of ozone (O3) is kept at a temperature of 250 K. Assume the molecules have radius r = 2.50 1010 m. What are the a. mean free path and b. mean free time between collisions for an ozone molecule in the container?arrow_forwardConsider a gas filling two connected chambers that are separated by a removable barrier (Fig. P20.68). The gas molecules on the left (red) are initially at a higher temperature than the ones on the right (blue). When the barrier between the two chambers is removed, the molecules begin to mix and move from one chamber to the other. a. Describe what happens to the temperature in the left chamber and in the right chamber as time goes on, once the barrier is open. Discuss in terms of the mixing of the molecules from each gas. b. Describe what happens to the most probable speed and average speed in the left chamber and in the right chamber as time goes on, once the barrier is open. Do they increase or decrease by the same factor? Explain. FIGURE P20.68 Problems 68 and 69.arrow_forwardPresents the diagram of the problem, necessary formulas, clearance and numerical solution: A poorly designed electronic device has two screws attached to different parts of the device that almost touch each other inside. steel bolts and brass are at different electrical potentials and if they touch, a short circuit will develop will damage the device. The initial separation between the ends of the screws is 5 μm to 27 ◦C. At what temperature will the screws touch? Assume that the distance between the walls of the device is not affected by temperature change and the coefficient coefficients of linear expansion αlaton = 19x10−6 ◦C −1 and αsteel = 11x10−6 ◦C −1arrow_forward
- a) Estimate the average spacing between the molecules of 1 mol of an ideal gas at a pressure of 1atm and a temperature of 300 K. b) 1 mol of liquid water occupies a volume of 18 cm. Estimate the spacing between molecules. c) Use your result from part (a) to estimate the diameter of a water molecule. d) Estimate the factor by which water expands when it boilsarrow_forwardP13E.18 It is possible to write an approximate expression for the partition function of a protein molecule by including contributions from only two states: the native and denatured forms of the polymer. Proceeding with this crude model gives insight into the contribution of denaturation to the heat capacity of a protein. According to this model, the total energy of a system of N protein molecules is E=Nɛe tikT /(1+et/kT ), where ɛ is the energy separation between the denatured and native forms. (a) Show that the constant-volume molar heat capacity is (ɛ/kT)eelkT Cy=f(T)R f(T)= (b) Plot the variation of Cym with temperature. (c) If the function Cym (T) has a maximum or minimum, calculate the temperature at which it occurs.arrow_forwardThe specific heat at constant volume of a particular gas is 0.182 kcal/kg.k at room temperature and it's molecular mass is 34. a) what is its specific heat at constant pressure? b) what do you think is the molecular structure of this gas?arrow_forward
- 2. POTENTIAL ENERGY OF GAS IN A GRAVITATIONAL FIELD. Consider a column of gas, consisting of atoms of mass M, at temperature 7 in a uniform gravita- tional field g. Find the thermal average potential energy per atom. The thermal average kinetic energy density is independent of height. Find the total heat capacity per atom. The total heat capacity is the sum of contributions from the kinetic energy and from the potential energy. Take the zero of the gravitational energy at the bottom h = 0 of the column. Integrate from h = 0 to h = ∞0.arrow_forwardQ1: A 1.5mx0.8m double glass window consists of two glass(k=0.78 W/mC) layers with a 4 mm thickness for each layer, seperated by a 10 mm thick of still air gap. If the thermal cnductivity of still air is 0.026 W/mC, what is the rate of heat transfer through the window, if the temperatures of the inner and outer surfaces of the window are 15 and -8°C respectively. يتكون شباك ارتفاعه 0.8m وعرضه 1.5m من طبقتين من الز جـاج 0.78 k=( (°CW/m سمك كل واحدة منهما Am m ومفصولتين بطبقة هوائية سمكها 10mm . إذا كان معامل الانتقال بالتوصيل ل لهواء الساكن W/m °C 0.026 أحسب معدل انتقال الحرارة خلال الشباك إذا كانت درجة حرارة السطح الداخلي ل لشباك C° 15 ودرجة حرارة السطح الخارجي C° 8-. T2 T3 هواء Glass Air Glass Ax, A X, A X3arrow_forwardHelium atoms have a mass of 4u and oxygen molecules have a mass of 32u, where u is defined as an atomic mass unit (u=1.660540×10−27 kg). Compare a gas of helium atoms to a gas of oxygen molecules. Part A: At what gas temperature TE would the average translational kinetic energy of a helium atom be equal to that of an oxygen molecule in a gas of temperature 300 K? Part B: At what gas temperature Trms would the root-mean-square (rms) speed of a helium atom be equal to that of an oxygen molecule in a gas at 300 K?arrow_forward
- diffusion across a one dimensional slabarrow_forwardProblem 3. The viral coefficients of a gas at 20 °C and 11.5 bar are B = -138 cm³ mol¹ and C=7222 cmº mol². Calculate the V (molar volume) Z (compressibility factor) of the gas. Use the equation below (R = 83.14 cm³ bar mol-¹ K-¹). PV 2 = ² = (1 + = + =) Z RTarrow_forward28. QC S Review. Figure P1.28 shows students studying the thermal conduction of energy into cylindrical blocks of ice. As we will see in Chapter 19, this process is described by the equation km²(Th – T.) Q At 4L For experimental control, in one set of trials all quantities except d and At are constant. (a) If d is made three times larger, does the equation predict that At will get larger or get smaller? By what factor? (b) What pattern of proportionality of At to d does the equation predict? (c) To display this proportionality as a straight line on a graph, what quantities should you plot on the horizontal and vertical axes? (d) What expression represents the theoretical slope of this graph?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Heat Transfer: Crash Course Engineering #14; Author: CrashCourse;https://www.youtube.com/watch?v=YK7G6l_K6sA;License: Standard YouTube License, CC-BY