A hot object is allowed to cool in air of constant temperature Tm. The object's temperature was initially at 170°C and cooled to 90°C in 10 minutes. Knowing that the material has a temperature decay constant of k=0.075/min, determine the temperature of the air.

Q: 1. A solid sphere and a hollow sphere of the same material and size are heated to the same…

A: Dear student,                    According to the guidelines I am allowed to answer only three…

Q: Hi, can you help me to answer this question using the first law of thermodynamics? On a hot summer…

A: The objective of this question is to determine whether a room with a fan left on all day will be…

Q: what two fundamental parameters of superfluid tell you if the superfluid is type one or type two?

A: A superfluid is a rare type of material that has peculiar characteristics like zero viscosity. This…

Q: 2. A spherical tank with internal diameter of 197-inches is made of 3-cm-thick stainless steel (k =…

A: Given: d=197 inchesri=2.5 mt= 3 cm = 0.03 mr0=2.5+0.03=2.53 mk=…

Q: What are the physical and thermal properties of water at 6 degrees celsi

A:

Q: Metals A and B were taken out from a boxed furnaces both at 500 degree Celsius. The ambient…

A: Given Data: The initial temperature of Metal A and B, T1=100 degree Celsius Ambient temperature,…

Q: 4) A spherical container is filled with iced water at 0°C. The tank is made of iron (k=15 W/m.°C)…

A: Here we will calculate equivalent resistance and use it to get heat transfer

Q: The temperatures on the left and right surfaces of a 15-cm thick wall are 375C and 85C . The wall is…

A: Given:Wall thickness, L=15 cmLeft side wall temperature, T1=375oCRight side wall temperature,…

Q: When the system is completely isolated from its surroundings so that there is no heat transfer, this…

A: Open thermodynamic system is a system in which both energy and mass can cross the boundary of the…

Q: 50 persons attended a secret meeting in a room 12 meters long, 10 meters wide and a ceiling height…

A: Given Data N=50 L=12 m W=10 m H=3 m Ti=16°C q=150 kcal/hr per person t=15 min

Q: Hi, can you help me to answer this question using the first law of thermodynamics formula to explain…

A: This situation is related with a closed system. Here we assume that there is no energy intake or…

Q: Using Maxwell's equation, derive the following expression for variation of specific heat at constant…

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: A machine element as seen in the figure is made of pure copper. It has an inner diameter of D;=2.9…

A: Given that, Inner diamter of element, Di=2.9 cm,Outer diameter of element, Do=5.9 cm,Height of…

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: You may have noticed that bridge decks are often built with expansion joints that permit the deck to…

A: To full fill the quality parameters , we can  not provide hand written solution…

Q: What is the effect of wind shear on thermals?

A: The detailed explanation is provided below.

Q: 3. A hot pie is just taken out from an oven with a set temperature of 175°F. It is placed near a…

A: Given data: - The initial temperature of the pie is Ti = 175 oF. The ambient temperature of the pie…

Q: Determine the steady-state temperature distribution Tr, t) In hemisphere of radius r b, in the…

A:

Q: Considering hot water flowing through a 50mm thick hollow cylinder which is surrounded by…

A: In this case first the heat is transferred from the hot fluid to the inner surface of the pipe. In…

Q: Stimulus Sends signal to hypothlamus Thermoreceptors Blood vessels constrict and sweat glands are…

A: Reference Input: Normal body temperature (36-37°C) Controller : hypothalamus Actuator :  glands,…

Q: A cylinder is filled with an ideal gas and closed by a piston that moves without friction. The…

A: Heat transfer to the system is Positive Heat transfer out of the system is negative Work done on the…

Q: Five glass vials will be transported 4 hours stacked on top of each other in a hollow cylinder case.…

A: Given Data: Ti=-80oCTf=-20oCWG=12.9 gH=38.7 mmd=22 mmtp=20 mmts=5 mmTatm=22oC   To Find: Thickness…

Q: Suppose that as a body cools, the temperature of the surrounding medium increases because it…

A: GivendTdt=kT-Tmk<0Tm=T2+BT1-TB>0

Q: A bottle of lemonade is removed from a refrigerator and put on a table outside on a hot summer day…

A:

Q: The thermal conductivity of a fluid is 0.09 BTU/ft-h-F having a kinematic viscosity of 0.0215 ft…

A: Given that: k = thermal conductivity of the fluid = 0.09 BTU/ft-h-F ν = kinematic viscosity of the…

Q: it is desired to understand the time - temperature behavior of a hot copper sphere. the sphere has a…

A: it is desired to understand the time - temperature behavior of a hot copper sphere. the sphere has a…

Q: What is the specific heat (cp) of Nitrogen, Helium and Carbon Dioxide. My answers are 1.04, 5.193,…

A: To find : specific heat (cp) of Nitrogen, Helium and Carbon Dioxide

Q: The nuclear fuel in cylindrical shape of length L at radius R is covered with aluminum shell at…

A: Given Data: Nuclear Fuel cell  Length = LRadius = RFHeat energy per unit volume Sn=Snoa+brRF1/2…

Q: The nodal diagram shown is of a section of a flat plate with thermal conductivity of 56 W/m K. The…

A:

Q: idaly übäi : Thermal diffusivity of a substance is proportional of conductivity inversely…

A: NOTE - As per our company guidelines we are supposed to answer only the first 3 multiple choice…

Q: Consider you have four long, 2 cm diameter rods, one each made of copper, steel, wood, and glass.…

A: There are four rods of different material but having same dimensions as length 2 Cm each.All the…

Q: 1. Judging  from its unit W/m.K can we define thermal conductivity of a  material as the rate of…

A: 1. We can not define thermal conductivity as the rate of heat transfer through the material per unit…

Q: Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls…

A:

Q: Determine the ratio of thermal conductivity for N2 at sea level (T = 300 K, P = 1 atm) versus the…

A: To given thaTemperature at sea level, TSea=300k at 1 atm pressureTemperature at sea Stratosphere,…

Q: 19 mm diameter steel balls are quenched by heating to 989 K followed by slow cooling to 400 K in an…

A:

Q: 3. Consider steady heat transfer between two large parallel plates at constant temperatures T1 = 300…

A:

Q: The thermal conductivity of a fluid is 0.09 BTU/ft-h-F having a kinematic viscosity of 0.0215 ft2/h.…

A:

Q: Hi, can you help me with the following problem? A thermally insulated tank of water 2 m x 2 m, depth…

A: Step 1: Step 2: Step 3: Step 4:

Q: Newton 's law of cooling describes the temperature T of a body cooling down to the surrounding…

A: Temperature of the body is T Surrounding temperature is To The equation given is: →dTdt=-kT-To Where…

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.