I'm Confused with two things One is about the Formula ,Which one should i use E=mcp∆T OR E=mcv∆T.Another thing is Conversion of unit (Whether I should Take ∆T= 4°F or in °C )Please clarify it in your solution with correct answer ,Have less time. A certain room measures 22 ft by 12 ft by 8 ft.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable toreturn to this part.How much energy is required to raise the air temperature from 68°F to 72°F, neglecting heat transfer to thewalls, floor, and ceiling?The energy required to raise the air temperature from 68°F to 72°F isx104 ft-lb.

Solution:- Given Data; Room Measures 22×12×8 ft3 Change in temperature ∆T=72-68…

Answered: The energy required to raise the air…

Engineering

Mechanical Engineering

The energy required to raise the air temperature from 68°F to 72°F is * 104 ft-lb.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.69P: The heat transfer coefficient between a surface and a liquid is 57 W/(m2K). How many watts per...

See similar textbooks

Related questions

Q: Air (diatomic, MW = 28.8664 g/mol) at 1.7 atm gage (where Pam = 1 atm) and 15°C enters a 70-m long…

A: Given:Pressure at the pipe entrance, P1=1.7 atm=1.7×101.325 kPa=172.2525 kPa 1…

Q: Using ultimate strength method to design a rectangular beam 16. for a 10 m simple span to support a…

Q: The wheel shown in the figure below (Eigure 1) is subjected to a force of P= 10 kN from the axle.…

A: The spokes of a wheel play a vital role in supporting the load and maintaining the wheel's…

Q: Classification Classification types of steel types of hardness test

A: steel classify on the basis of some factor as composition, properties, and applications. Carbon…

Q: Turnbuckle T₁ is tightened to a tension of 160 lb and turnbuckle T₂ is tightened to 98 lb. Determine…

A: As per the Bartleby code of conduct, it is recommended to answer the three subparts of a multiple…

Q: Part A - Normal Stresses, Shear, and Angles The stress element shown in the figure below is…

Q: Topic: Equilibrium The skycam at Stanford University Stadium has a mass of 20 Kg and is supported by…

A: Given Data: Mass of the Skycam m=20 kg Find: Tension in a Cable C

Q: The 216 kg slider at A is held in place on the smooth vertical bar by the cable AB. Determine the…

A: The moment about the bottom of the bar. Given: The mass of the slider is m=216 kg.

Q: Need a front, top and side view of this please

A: This question is based on the concept of engineering drawing.

Q: A steel pipe 50 cm long has an outside diameter of 2.2 cm and an inside diameter of 2 cm. If the…

A: The length of the steel pipe, (L)=50 cm. The outside diameter of the pipe,(do)=2.2 cm The inside…

Q: Need auxiliary views of this drawing

A: This question is based on the concept of engineering drawing.

Q: = 2.8 kg rotates freely The uniform semicircular bar of radius r = 90 mm and mass m about a…

A: The mass of bar is m=2.8 kg The radius of arc is r=90 mm=0.09 m The angular velocity at point 2 is…

Q: If the 80.0-lb bucket is released from rest, determine its velocity after it has fallen a distance…

Q: Locate the centroid of the figures shown. Calculate the moment of inertia along X and Y. All…

A: r=130 mm To find: x,y,Ix and Iy

Q: A rear-wheel drive vehicle is traveling at 57 mi/hr on a level surface with a coefficient of…

A: The speed of the rear-wheel drive vehicle: ν= 57 mi/hr = 83.6 ft/s The coefficient of adhesion:…

Q: Consider the shock tube with the given dimensions in the Figure 1 where both driver and driven gases…

A: To calculate the incidence shock strength (p2/p1), reflected shock strength (p5/p2), and incident…

Q: The turnbuckle is tightened until the tension in the cable AB equals 2.9 kN. Determine the vector…

Q: A 400 400 lb/ft B 2 ft →1 ft Pc=400 lb C 200 lb/ft 4 ft D -2 2 ft ft → E

A: The beam has two reactions at point B due to hinge joint while there is only one reaction at point d…

Q: Required Information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

A: Vertical load applied at point C: →P=420 lb Because angle made by the member AC from the horizontal:…

Q: 5. Calculate the brake thermal efficiency of a supercharged 4-cylinder, four stroke with a bore and…

A: Given data Dynamometer reading =143.3 lbArm length = 13.8" = 1.15 ftSpeed = 440 rpmTime of test = 14…

Q: In order to make an adjustment, a group of engineering students remove leg D from a laboratory…

A: The normal reaction forces at each leg. Given: The mass of the books is mb=4 kg. The mass of the…

Q: Determine the forces in members BE and CE of the loaded truss. The forces are positive if in…

Q: The 5-m wide sluice gate “ab” shown, tangent to the vertical wall at “a”, holds back water. The…

A: Width of the gate→w=5 m Radius of the cylindrical part→R=4 m Angle made by the the gate the center…

Q: 4. If the bearing pads at A and B support only vertical forces, determine the greatest magnitude of…

A: The bending stress allowable is σallo=15 MPa The shear stress allowable is τallow=1.5 MPa

Q: Example(1-13): steam and water flow through 75 mm inside diameter pipe at flow rate of 0.05 and 1.5…

Q: 2. GIVEN: NACA 23112 AND chord is 115 cm Determine: a) Maximum Camber b.) Position of Max. Camber,…

A: NACA Nomenclature

Q: A nozzle is attached to a 6-cm-diameter hose but the horizontal nozzle turns the water through an…

A: Given: Nozzle inlet diameter, d1=6 cm=0.06 mNozzle exit diameter, d2=3 cm=0.03 mFlow rate through…

Q: Design a six-horsepower engine for a snowblower. Decide on the operating speed, number of strokes in…

Q: 9 The products of combustion, use air, enter a con- vergent nozzle of a jet engine at a total…

Q: P1 10 Boiler 12. P13 8200 PIV 14 16 Closed Closed FWHI FWHII 8 T13 350 13 PIII High-P Turbine Open…

A: Find

Q: A passenger in the front seat of a car looks over at the speedometer and says to the driver, "You…

A: This question is based on the concept of measurement.

Q: An ideal gas within a piston-cylinder assembly undergoes a Carnot refrigeration cycle, as shown in…

A: Given that, an ideal gas in piston-cylinder device undergoes a Carnot refrigeration cycle shown in…

Q: 1. A circular cam is rotating clockwise about O with a constant c. Determine the velocity and…

A: Given data To determine the acceleration of the follower as function of θ

Q: Required Information NOTE: This is a multi-part question. Once an answer is submitted, you will be…

Q: Locate the centroid of the figures shown. Calculate the moment of inertia along X and Y. All…

Q: As shown in the figure below, a rigid, insulated tank is divided into halves by a partition that has…

A: A rigid insulated tank is divided into two partition. One partition contains gas while other is…

Q: The coefficient of static friction between the box and inclined surface is 0.14, and the coefficient…

Q: Please guide me through the procedure of thoroughly testing individual components.

A: To ensure the dependability and functionality of a system, each components must be thoroughly tested…

Q: For the truss structure shown, determine the vertical deflection at B by using the Principle of…

A: Area of each member = 10 in² E = 30x10 psi

Q: The small collar of mass m = 0.59 kg is released from rest at A and slides down the curved rod in…

A: Given - h=2.99 mVA=0m =.59 kg To Find - VB=?

Q: A straight, uniform bar weighing 60lb rests in a horizontal positon between two frictionless slopes.…

Q: The disk has a weight of 30 lb and rolls without slipping on the horizontal surface as it oscillates…

A: Force,F=md2xdt2+kx ...... (1)Here, m is mass, k is spring constant and x is…

Q: In a certain industrial process, oil of density p flows through the inclined pipe in the figure…

A: Here, the given pipe flow is steady , U tube manometer is connected between section (1) and (2) .The…

Q: A vertical furnace wall is made-up on an inner wall of firebrick 20 cm thick followed by insulating…

A: Given data: L1=20 cmL2=15 cmL3=1 cmTi=1200°CTo=50°Ck1=10 W/m.Kk2=0.26 W/m.Kk3=45 W/m.K Need to…

Q: Problem 4. Classify each of the structures as statically determinate, statically indeterminate, or…

Q: 5. A wheel of mass m is accepted as a homogeneous disk of radius R and moves on the vertical plane.…

Q: Is it possible to machine uneven surface with electromechanical machining process (ECM)

A: Is it possible to machine uneven surface with electromechanical machining process (ECM).

Q: Gear A is the input and rotated at 3850 RPM clockwise from the left end. The input torque is 30Nm…

Q: A steel cable with a diameter of 3.0cm supports a load of 2.0 kN. What is the frictional length…

Q: 9-15. Determine the vertical displacement of joint A. Assume the members are pin connected at their…

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

I'm Confused with two things One is about the Formula ,Which one should i use E=mcp∆T OR E=mcv∆T. Another thing is Conversion of unit (Whether I should Take ∆T= 4°F or in °C ) Please clarify it in your solution with correct answer ,Have less time.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Step 1

Step 2: Step 2

Step 3: Step 3

Solution

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

How many Btu/h would be produced in a 12-kW electricheater?
The heat transfer coefficient between a surface and a liquid is 57 W/(m2K). How many watts per square meter will be transferred in this system if the temperature difference is 10C?
Why does an object weigh less on the moon than on earth?
1. A gas is confined in a 3.98ft diameter cylinder by a piston, on which rests a weight. The mass of the piston 7.25lbm and weights is 270lbm. (a) What is the force in lbf exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder? (b) What is the pressure of the gas in psia? (c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 2.2ft, what is the work done by the gas in ft-lbf? What is the change in potential energy of the piston and weight?
Question #1 a) The absolute pressure inside a tank is 0.13bar, and the surrounding atmospheric pressure is 98 kPa. A Bourdon gage is mounted in the tank wall to measure the pressure, in kPa? Is this a vacuum or gage reading? b) (967)kJ of heat is transferred from the system to the surroundings when a closed system of mass (28)kg undergoes a process. During the process, 200kJ work is done on the system. If the initial specific internal energy of the system is 300 kJ/kg, Describe the process and determine the final specific internal energy, in kJ/kg? Neglect changes in kinetic and potential energy.
2.5 liters of water at 60 degree Celsius is placed in a freezer. What amount of mass in kilograms has not yet transformed into solid ice if only 80 percent of the total Heat was removed?
Air at 27 Celsius degree receives heat at a constant volume until its temperature reaches 927 Celsuis degree. determine the heat added per kelogram?
If an engine that throws 200 kW of heat energy into the atmosphere produces 150 horsepower (hp), what is the efficiency of this engine? TIP: Horsepower is not included in the international unit system, you must convert it to kW.
Nitrogen gas is confined in a cylinder and the pressure of the gas is maintained by a weight placed on the piston. The mass of the piston and the weight together is 100 kg. The acceleration due to gravity is 9.81 m/s2 and the atmospheric pressure is 1.01325 bar. Assume frictionless piston. Determine: (a) The force exerted by the atmosphere, the piston and the weight on the gas if the piston is 200 mm in diameter. (b) The pressure of the gas. (c) If the gas is allowed to expand pushing up the piston and the weight by 500 mm, what is the work done by the gas in kJ? (d) What is the change in the potential energy of the piston and the weight after the expansion in part (c)?
1. The fuel tank of a car holds 80 L of gasoline. Assuming that the gasoline has a specific gravity SG = 0.74. Determine the weight of the gasoline in the tank. 2. Consider an appliance that consumes 320 W of electric power when it is running. If the appliance only run half of the day and the unit cost of electricity is $0.09/kwh, the electricity cost in pesos of this appliance per month is? (Take 1 month to be 30 days and 1 dollar to be 50 Php).
1. Convert a temperature of 40oF to a. oC b. K c. oR 2. In a location where the local atmospheric pressure is 100 kPa a. What is the equivalent absolute pressure of 40 kPa Vacuum? b. What is the equivalent absolute pressure of 75 kPa Gage? c. What is the equivalent absolute pressure at the base of a 20cm vertical column of mercury if the density of mercury is 13.6 times more than water? 3. Air is inside a piston-cylinder arrangement initially at a pressure of 1.2 bar, temperature of 77oC and a volume of 0.8 m3. The air is cooled at constant pressure until the volume is halved. Determine the following: a. The mass of air in the cylinder b. The final temperature 4. Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N ∙ m. Determine the final energy of the system if its initial energy is 10 kJ. 5. 5…
Liquid is held into two components Separated by a membrane.the total volume is 775ft3 and the volume of compartment Y is 300ft3 and it’s specific volume is 9.55ft3/lb.the membrane breaks and the resulting specific volume is 12.5 ft3/lb. a) determine the original specific volume in compartment X b)after breaking the membrane,the temperature of the liquid is 3 degree centigrade.if the absolute temperature of this reading is doubled and decreased by 239 degrees,what would be the final temperature of the maximum degree Celsius and degree Rankine