V - I graphs of a nichrome wire at three different temperature t, t2 and t3 are shown in the figure. What inference can be drawn from the figures! I V-> A) Slope of nichrome wire at t, is greater than slope at t2 and t3 respectively. B) t, > t2 and t, > t3 C) t, > t2 and tz and t2 D) Slope of níchrome wire at t3 is greater than slope at t and to .. following

V - I graphs of a nichrome wire at three different temperature t, t2 and t3 are shown in the figure. What inference can be drawn from the figures! I V-> A) Slope of nichrome wire at t, is greater than slope at t2 and t3 respectively. B) t, > t2 and t, > t3 C) t, > t2 and tz and t2 D) Slope of níchrome wire at t3 is greater than slope at t and to .. following

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter2: The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 92AP: Unreasonable results. (a) Find the temperature of 0.360 kg of water, modeled as an ideal gas, at a...

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(II) You buy an “airtight” bag of potato chips packaged atsea level, and take the chips on an airplane flight. Whenyou take the potato chips out of your “carry-on”bag, you noticeit has noticeably “puffed up.” Airplane cabins are typicallypressurized at 0.75 atm, and assuming the temperatureinside an airplane is about the same as inside a potato chipprocessing plant, by what percentage has the bag “puffedup” in comparison to when it was packaged?
1. A three-liter tank contains two gram-moles of nitrogen at − 150.8o C. Estimate the tank pressure using the ideal gas equation of state and then using the Virialequation of state truncated after the second term. Taking the second estimate to be correct, calculate the percentage error that results from the use of the ideal gas equation at the system conditions. Data for nitrogen: Tc = 126.2 K, pc = 33.5 atm, and ω = 0.04012. 2. One mole of propane gas is to be expanded from 0.001 m3 to 0.040 m3 while incontact with a heating bath at 100o C. The expansion is not reversible. The heatextract from the bath is 600 J. Determine the work for the expansion using theVan der Waals equation of state.
Suppose the absolute temperature of anideal gas is doubled from 100 K to 200 K. (a) Does the averagespeed of the molecules in this gas increase by a factor that is greaterthan, less than, or equal to 2? (b) Choose the best explanation fromamong the following:I. Doubling the Kelvin temperature doubles the average kineticenergy, but this implies an increase in the average speed by afactor of 22 = 1.414c, which is less than 2.II. The Kelvin temperature is the one we use in the ideal-gas law,and therefore doubling it also doubles the average speed ofthe molecules.III. The change in average speed depends on the mass of the molecules in the gas, and hence doubling the Kelvin temperaturegenerally results in an increase in speed that is greater than afactor of 2.
B) i) In the lab there are some sample materials, as mentioned in table below. Hasan wants to identify a material in the physics lab, and he chose one material of Area 6 cm2 and 3 cm thick. He heats up that material from 290 K to 305 K. If rate of heat flow is 24 watt (J/s), then find out, through calculation, which material he has chosen. ii) In the above table, which material will conduct more energy in 120 secs?
Two rooms, each a cube 4 m per side, share a 12-cm thick brick wall. Because of a number of 100-W lightbulbs in one room, the air is at 30 deg C, while in the other room it is at 10 deg C. How many of the 100-W bulbs are needed to maintain the temperature difference across the wall? kbrick = 0.84 W/m.K Round your answer to 2 decimal places.
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun.Typically, the temperature and partial pressure of ozone in the stratosphere are 250 K and1.0 × 10−3 atm, respectively. How many ozone molecules are present in 1.0 L of air under theseconditions? Assume ideal-gas behavior
Are the Temperature and internal energy state variables? How?
(II) Heat conduction to skin. Suppose 150 W of heat flows byconduction from the blood capillaries beneath the skin tothe body’s surface area of 1.5 m2 If the temperature difference is 0.50 C°, estimate the average distance of capillaries below the skin surface.
5 mole of an ideal gas for which Cv,m=3/2R, initially at 20 oC and 1 atm undergoes atwo-stage transformation. For each of the stages described in the following list,Calculate the final pressure as well as q, w, ∆U, ∆H and ∆S.a) The gas is expanded isothermally and reversibly until the volume doubles.b) then, the temperature is raised to T=1000/X oC at the constant volume.Note: R= 8.314 j/mol.K or 0.082 lt.atm/mol.K, 1lt.atm= 101.325 joule x=4.5
(I) How does the number of atoms in a 27.5-gram gold ringcompare to the number in a silver ring of the same mass?
An ideal gas lagged copper rod 25cm long and thickness 1.2cm thick, has one free end maintained at 100°C and the other end 90°C. Calculate I. The temperature gradient II. The rate of flow at the study state (Thermal conductivity of copper is 390 Wm^-1K^-1)
Explain in words, why it requires more heat (Q) to raise the temperature of a gas at constant pressure than it does to raise the temperature by the same amount at constant volume. In other words, what is the conceptual reason why Cp > CV ?