Calculate the heat loss per m of surface area for an insulating wall composed of 25.4-mm-thick fibe insulating board, where the inside temperature i 352.7 K and the outside temperature is 297.1 K. • Thermal conductivity of fiber insulating board i 0.048 Ar = 25.4 mm = 0.0254 m To = 352.7 K,T, = 297.1 K

Q: A composite wall of room is composed of three layers 1,2 and 3 such that the conductivity of the…

A: Given data: Conductivity of the layers:  K1=1 W/m.K  K2=2K1=21 W/m.K  =2 W/m.K  K3=2K2=22 W/m.K =4…

Q: The normal boiling point of nitrogen is -195.75 • C. What is this temperature in Fahrenheit?

A:

Q: Indigenous peoples sometimes cooked in watertight baskets by placing enough hot rocks into the water…

A:

Q: A dormitory at a large university, built 50 years ago, has exterior walls constructed of L, =…

A: Given data: Exterior wall thickness Ls=25 mm       =25×10-3 m Thermal conductivity ks=0.1 W/m.K…

Q: Voyager I is a space probe launched in 1977. An aluminum antenna on Voyager was 37.9 ? long on…

A: L0=Length of antenna=37.9 mα=Coefficient of linear expansion of aluminum=24×10−6 °C-1Final…

Q: A beach ball has a volume of 0.100 m3• The pressure of the air in the ball is one atmo­ sphere and…

A:

Q: At what rate (W) is heat loss through a 1.23 m by 1.76 m glass window pane that is 0.620 cm thick…

A: Given data, Area of window A=1.23×1,76=2.1648 m2. Thermal conductivity of glass K=0.78 W/mK.…

Q: *Pr1. An aluminum ring with the external and internal radiuses 3.1 cm and 1.3 cm at 20°C is heated…

A: Change in area of ring is as follows: ∆A=2αLA∆T…

Q: A brass plug is to be placed in a ring made of iron. At 14 •C, the diameter of the plug is 8.786 cm…

A: Given that:-Initial temperature, T1=14°CFinal temperature, T2Diameter of plug, D=8.786 cmDiameter of…

Q: You are eating a bowl of soup at 85 degC. The soup bowl has a diameter of 6.0 inches and the air…

A: Temperature of bowlTb=85 oC=85+273 K=358 KTemperature of air above the bowlTa=21 oC=21+273…

Q: • A 256-kg rock sits in full sunlight on the edge of a cliff 5.75 mhigh. The temperature of the rock…

A: The given values are, mr=256 kgh=5.75 mTr=33.2° CVw=6.00 m3Tw=15.5° Ccr=1010 J/kg·Kmw=ρwVw=1×103…

Q: What mass of steam at 100°C must be mixed with 150 g of ice at -10°C, in a thermally insulated…

A: Given :              Temperature of steam = 100°C              Temperature of ice = -10°C…

Q: An electrically insulated circular wire is horizontal and submerged in still water at 280K. Internal…

A:

Q: In the pasteurization process (heating food during production, for conservation by longer), milk…

A:

Q: a) A house walls that are 23 cm thick and have an average thermal conductivity two times that of…

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: •54 If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut…

A:

Q: In the lab, you have nails with mass Mn and temperature Tn. You submerge those nails in the water…

A: Given data The Specific heat capacities of nails is,Cn=0.12 cal/gC The Specific heat capacities of…

Q: TH Ta 4.00cm 3.00cm 2.20m A rectangular bar of gold has the dimensions as shown. (This is a very…

A: length of gold bar, l= 2.2 m cross-section area , A= (3 cm)x(4 cm)=12 cm2 = 12 x(10-2 m )2 = 12 x…

Q: An aluminum pot contains water that is kept steadily boiling (100 °C). The bottom surface of the…

A: In the case of aluminum, dQdt=kAdTdx=235W/mK1.5×10-2 m2102°C-100°C12×10-3 m=587.5 W

Q: QI / Two metals Beryllium (Be) and Silicon (Si) have melting points 1282°C and 1414 °C respectively,…

A: Given that two metal Be and Si have melting points 1282°C and 1414°C respectively are completely…

Q: 200 mL of 100°C hot tea was poured in a 250 mL vacuum flask and sealed. 0.01 mL of water in the tea…

A: We have V1=200 mL of tea at temperature T=100oC=373.15 K which is poured in a flask. After 1 hour a…

Q: A wooden sphere of diameter 5 cm is initially at a uniform temperature of 21 °C. Its…

A: The objective of the question is to calculate the temperature beneath the surface of the sphere and…

Q: n elastic rod with a cross-section area A = 3 mm2 is stretched from an initial length of 1.0 m to a…

A: Given, Area of rod, A=3 mm2 =3x10-6 m2 Initial length, lo=1m Final length, l=1.1m Constant…

Q: Number 3 A food product with 73% moisture content in a 5 cm diameter can wants to be frozen. The…

A: Given data- Density of the product=970 kg/m3 Thermal conductivity of the product=1.2 W/m.K Freezing…

Q: The temperature of an ingot of metal is 90 •C and the room temperature is 30 •C. After twenty…

A:

Q: coefficient of expansion Celsius, determine the stress in the in the rod assuming the wall are…

A:

Q: ATA TABLE Purpose: To determine the thermal coefficients of expansion of metal samples. Initial…

A:

Q: A block of ice, 150.6g is initially at 0°C. The ice is heated until it has turned to water at a…

A:

Q: a) A house walls that are 15 cm thick and have an average thermal conductivity four times that of…

A: Hi, you have posted multiple questions without specifying which question to be solved so we will…

Q: In an experiment, the need arose to warm 3.00 kg of air. As a result, all the heat extracted when…

A:

Q: Calculate the heat needed to heat up a 6.0 kg copper from 15°C to 80°C. The specific heat capacity…

A: Mass of copper: m = 6.0 kg Initial temperature: Ti = 15°C Final Temperature: Tf = 80°C Specific heat…

Q: Determine the thickness of the Teflon layer so that the heat flux is equal to 200W/m2.

A: Thermal Conductivity The thermal conductivity is defined as the rate at which heat is transferred by…

Q: What is the value of the heat absorbed or emitted by liquid water of mass m = 410 g at 12° C to take…

A:

Q: Two objects A & B are put into thermal contact ar equilibrium. • A) mA = 100 g; CA = 900 J/(kg K) B)…

A: