When a metal bar is removed from an oven, its temperature is measured at 300°F. Three minutes later, its temperature is 200°F. How long will it take for the bar to cool down to the room temperature of 70°F

Q: In the following conditions; determine its properties: a. P=2.0 MPa, x=90% b. T=2000C and x=80%

A:

Q: mass of the copper?

A: GIVEN- Heat (q) = 1386J T1= 20 deg.c T2= 80 deg.c Copper heat capacity (C) = 0.385 J/g ° C   To…

Q: The state of steam after cooling The amount of heat rejected by the steam The change in…

A: Given: A rigid container V=0.043 m3 P1=150 bar T1=543oC P2=70 bar TO determine:  State of steam…

Q: based on Professor Plum finding Mr. Body dead at 7 PM in the Dining Room of the Parker Brother…

A: GivenT=25°CT'=37°CT"=20°Cρ=996 kg/m3c=4.178 kJ/kg°C=4178 J/kg°CD=30cm=0.3mL=1.7mNow the surface area…

Q: Define the Specific gravities of some substances at 0°C?

A: For defining the specific gravity we have to know the values for density of standard fluids or…

Q: (Ans. 0.225; 0.1625; 0.48720.7583 kJ)

A:

Q: A thermometer reading 18°F is brought into a room where the temperature is 70°F, 1min later the…

A: This question is related to the temperature measurement .temperature is the feeling of hotness and…

Q: What do you mean by specific heat at constant pressure?

A: The process of heat transfer to a gas system can occur or can be done in different ways such as: At…

Q: On a mild Saturday morning while people are working inside, the furnace keeps the temperature inside…

A: GivenTi=23oCTo=14oCT=19oCτ=3 hrwhen windows are opnedτ=2hr

Q: A thermometer is placed in a controlled environment of 25.5C when its initial temperature is 80.25C.…

A: Newtons law of cooling is integrated to arrive the solution.

Q: dead body was found within a closed room of a house where the temperature was a constant 70°F. At…

A:

Q: Specify the condition of the following given. 1.p = 11-MPaa and h = 2805 kJ/kg 2. p = 4-MPaa and s =…

A:

Q: How does the melting temperature of pure solid material change with increasing pressure

A: Generally speaking melting point of pure solids, like metals increases with increase with in…

Q: At 2:00 PM, a thermometer reading 80oF is taken outside where the air temperature is 20oF. At 2:03…

A: Given data:- At 2:00 PM thermometer reading = 80o F                             Outside the air…

Q: Describe what a "heated zone" is, how it works, and any constraints that may apply to it.

A: The heated zone.

Q: f I am given two thermodynamic properties of a material as equations with units that are unknown,…

A: There are two thermodynamics properties with unit.

Q: Two vessels of different shape and sizes are connected by means of a pipe with a valve. Vessel A has…

A:

Q: Butane, with MW=58g/mol, is a type of hydrocarbon commonly used as fuel for portable stoves The gas…

A: Given: Molar weight of the butane: →w=58 g/mol Initial volume of the container: →V=20 L=0.02 m3…

Q: ΔHvap =31.3 kJ/mol for acetone. If 1.40 kg of water were vaporized to steam in a boiler, how much…

A: We know that Q=mw*Lw Lw=Latent heat of water=2260KJ/kg mw=mass of water=1.4 Q=1.4*2260 Q=3164 KJ As…

Q: A dead body was found within a closed room of a house where the temperature was a constant 66 °F. At…

A: Given: Let us consider the given information's, T∞=66°F At t=t+1,  T=75°F At t=0,  T=98.6°F At t=t,…

Q: A body is removed from a confined space where the temperature is 70°C and is taken outside, where…

A:

Q: 3. A sealed Styrofoam container is filled with water ico at 0° C. The thickness of the Styrofoam is…

A: The final answer is 99 grams. Please find the attached solution.

Q: Two kilograms of water is contained in a piston-cylinder device where a linear spring is attached to…

A:

Q: Determine the MW and specific heat ratio of a gas whose Cv=1.386 kJ/kg.K and R= 0.485 kJ/Kg.K…

A:

Q: (a.) What is the relationship between power, P (in watts) and work, W (in joules)? What is the…

A:

Q: Three bars each made of different materials are connected together and placed between two walls when…

A: Given Data

Q: According to newton’s law of cooling, the rate at which a substance cools in air is directly…

A: Write the given values with the suitable variables. T0=30 °FT1=100 °FT2=75 °Ft1=15 minTi=80 °FTf=35…

Q: Initially the temperature of an object is 70°C, it is taken outside. The temperature of the…

A: Given: The temperature of the object, Ti1 = 70 C The temperature of the surrounding, To1 = 20 C The…

Q: Measuring the temperature of very cold substances can be challenging. Here is one way of measuring…

A:

Q: applications of DE a body at a temperature of 200F is placed in room at a constant temperature of…

A:

Q: Acetylene is contained in a 0.5-ft cylinder whose length is 40 inches. Initially, the pressure and…

A: Given that ,  d=0.5ft l=40in   =4012  =3.33ftP1=36000 lb/ft2T1=90°F=90+459.67=549.67P2=28800…

Q: All air is removed (vacuumed) from a 2 liter closed container that contains 200 ml of Liquid A and…

A:

Q: ermined, it is found out that the gauge pressure is 35.7 kgf/cm2 and the temperature is 21°C. If the…

A:

Hydronics