Concept explainers
We want to construct a thermometer using mercury. As the mercury in the bulb is heated, it expands and moves up the thin capillary tube connected to the bulb. The symbol used for the coefficient of volume expansion of a substance due to a temperature increase is p. It is used in the following equation:
ΔV =βV(ΔT)
Here, ΔV is the increase in volume, V is the original volume, and ΔT is the temperature increase. The value of β for mercury is 1.8 × 10−4 [1/degree Celsius] . If the bulb contains 0.2 milliliters [mL] and the tube has a diameter of 0.2 millimeters [mm], how much will the mercury rise in the tube in units of centimeters [cm] if we increase the temperature from 30 degrees Fahrenheit [°F] to 70 degrees Fahrenheit [°F]?
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Additional Engineering Textbook Solutions
Fundamentals of Aerodynamics
Vector Mechanics for Engineers: Dynamics
Vector Mechanics for Engineers: Statics, 11th Edition
INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
Introduction To Finite Element Analysis And Design
Degarmo's Materials And Processes In Manufacturing
- We have superheated steam at a pressure of 0.05 bar and temperature of 366.62 oC. What is the specific volume in units of m3/kg? Use the steam tables and report your answer to three decimal places. Note that in the steam tables, the specific volume is reported in units of m3/kg.arrow_forwardHow much heat is absorbed by a 27.0 g sample of water in going from liquid at 38.2 °C to steam at 119 °C and a pressure of 1.00 atm? Use the data in the following table. Express your answer in kilojoules. Pay attention to units! Some Thermal Properties of Water Property Specific heat (J/g °C) Solid Liquid Gas AHfusion (kJ/mol; at 0 °C) A Hvaporization (kJ/mol; at 100 °C) A Hsublimation (kJ/mol) Melting point (°C) Boiling point (°C) Answer: Value 2.07 4.18 2.01 6.01 40.6 50.9 0 100arrow_forwardWater freezes at 0° Celsius and 32° Fahrenheit and it boils at 100°C and 212°F. (a) Find a linear function F that expresses temperature in the Fahrenheit scale in terms of degrees Celsius C. Use this function to convert 5°C into Fahrenheit. °F (b) Find a linear function C that expresses temperature in the Celsius scale in terms of degrees Fahrenheit F. Use this function to convert 120°F into Celsius. °℃ (c) Is there a temperature n such that F(n) = C(n)? (If an answer does not exist, enter DNE.)arrow_forward
- 2. The formula below finds the Reynold's number, Re, a measure of the characteristics of fluid flow in a pipe. Dvp a. If D (diameter of the pipe) is measured in meters, v (flow velocity) is measured in meters/second, pis density measured in kilograms/meter, and Re is dimensionless, what are the units for u, the dynamic viscosity? b. The dynamic viscosity of ethyl alcohol is 2.0 x 105 Ibf-s/ft?. Convert this to SI units you found in Part a.arrow_forwardThe vapor pressure of Substance X is measured at several temperatures: temperature vapor pressure 27. °C 0.0373 atm 40. °C 0.0809 atm 53. °C 0.165 atm Use this information to calculate the enthalpy of vaporization of X. Round your answer to 2 significant digits. Be sure your answer contains a correct unit symbol. 믐 ?arrow_forwardthe question from thermodynamics Oxygen (molar mass 32 kg/kmol ) expands reversibly in a cylinder behind a piston at a constant pressure of 3 bar. The volume initially is 0.01 m3 and finally is 0.03 m3; the initial temperature is 18.97 0C. Calculate the mass of oxygen with the correct unit to four decimal places. Assume oxygen to be a perfect gas and take the specific heat at constant pressure as = 0 . 9 1 7 k J / k g K and molar gas constant as = 8,314 J / kmol Karrow_forward
- A room measures 121⁄2 feet wide and 151⁄2 feet long. The walls are 8 feethigh. The volume of air in the room changes six times each hour. How manycubic feet of air enters the room each minute?arrow_forwardQ1. The image below shows an example of "absolute dependent motion analysis", where the motions of two objects depend on each other, and the goal is to find the relations in their motions (i.e., in their positions, velocities, and accelerations). Please put the suggested steps of analysis in the correct order. VA A B VB Differentiate the entire equation with respect to time, and extract the relation in velocities. Repeat for acceleration if needed. Set up a coordinate (s) along the direction of motion from a fixed point (O) or a fixed datum line. Represent the positions of the objects respectively. In some cases intermediate objects need to be considered too and their positions need to be represented as well. Recognize the constant length(s) and find the depending geometric relations between the position variables.arrow_forwardRate of heat transfer and rate of mass are the same in which they are a quantity but they differ in their sign convention and units. Select one: O True O Falsearrow_forward
- Consider an introductory thermodynamics class experiment used to demonstrate phase change phenomena. A beaker of water is heated, and its temperature measured over time to establish the temperature at which boiling occurs. The results, shown in the Figure below, are for three separate tests conducted on different days by different student groups using the same equipment and method. Why might the data from three seemingly identical tests show different results? Temperature (°C) 101 100 99 98 97 96 95 94 1 2 3 4 Time (min) 5 Boiling region 100.3 100.1 99.8 Boiling point results Test 1 (762 mm Hg) Test 2 (754 mm Hg) Test 3 (767 mm Hg) 6 7arrow_forwardA thermometer reading 10°C is brought into a room with a constant temperature of 33°C. If the thermometer reads 15°C after 3 minutes, what will it read after being in the room for 5 minutes? For 10 minutes? C After 5 minutes, the thermometer will read °C. (Do not round until the final answer. Then round to the nearest hundredth as needed.)arrow_forwardThe volume in buoyancy formula is the volume of the entire object. Select one: O True O False Reynold's number identify the laminarity of the fluid. Select one: True False If the velocity in a given location is invariant with time the flow is said to be non-steady. Select one: O True O False The viscosity of a fluid is a measure of its resistance to defeormation. Select one: True O Falsearrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY