coefficient of thermal conductivity depends on what factors?

Q: When a solid body is heated, what happens to its mass and density?

A: Density = Mass/Volume   When a substance is heated its volume increases and so the density…

Q: What condition is necessary for flow of heat?

A: The factor or condition that is necessary for heat transfer to occur is that two object 'must have…

Q: What is thermal expansion and coefficient of thermal expansion?

A: In thermodynamics, thermal expansion is defined as the expansion in the size of an element due to an…

Q: What is meant by the terms of thermal expansion and thermal conductivity?

A: Thermal conductivity:

Q: How is heat capacity of a body related to specific heat capacity of its substance?

A: Heat capacity is defined as the heat required in raising the temperature of a substance by 1 degree…

Q: In order to measure the transfer of thermal energy from one temperature body to another, what device…

A: Explanation: A thermometer is an instrument that measures temperature (thermal energy).

Q: How do specific heats of solids vary with temperature?

A: The ability of a substance to absorb heat is known as Specific heat

Q: On a cold day, a piece of metal feels much colder to the touch than a piece of wood. This is due to…

A: From the above option which match nearly  Correct option is (b) specific heat .

Q: what factor determines the rate in which a material conducts heat?

A:

Q: How do the thermal conductivity of gases and liquids vary with temperature?

A: Given:  thermal conductivity

Q: what is the difference between  heat transfer by conduction, convection and radiation

A: We know that, The heat transfer is slow in conduction. The heat transfer is faster in convection.…

Q: aluminum has a higher specific heat capacity than iron this means that for equal masses of aluminium…

A: Answer:- Aluminum has a higher specific heat capacity than iron this means that for equal masses of…

Q: Which of the following does not affect the heat flow by conduction through a slab? O Specific heat…

A: If we have a slab of area A, thickness x, thermal conductivity K, specific heat C and temperature…

Q: If no heat is lost to the environment, what is the specific heat of the cup material? [Hint:…

A:

Q: Find the heat flow in 30.0 days through a 0.25 cm thick steel plate with cross section 45 cm X 75…

A: The time in seconds can be calculated as follows,

Q: Sslg ala The body loses.. Of its heat body through * radiation 40% O 65% O 30% O 2% O 85% O

A: Radiation is the process in which there is a transfer of heat from one object to other without any…

Q: You are sick, and your temperature is 312.0 kelvins. Convert this temperture to the fahrenheit…

A: Basic formula for converting Kelvin into Celsius scale is :  K − 273.15 = °C       ..... (1) Now ,…

Q: Which is largest unit of heat transfer- Calorie, calorie, joule?

A:

Q: Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an…

A: Given: d=13 cm=0.13 m Thermal conductivity, k=0.084 J/sm°C A=120 m2 Inside temperature, Tinside=18°C…

Q: Give 3 examples that show thermal expansion that happens in houses explain

A: Thermal expansion is the tendency of a substance to change it's physical dimensions resulting in a…

Q: What is the necessary condition for thermal equilibrium?

A: The transfer of heat takes place from the higher temperature object to the lower temperature object.

Q: How is heat transfer related to temperature?

A: Heat and temperature are related to each other but these are different quantities. Temperature is a…

Q: In Convective Heat Transfer the greater the motion of the the greater the heat transfer, in general,…

A: Convective heat transfer takes place in fluids due to density difference .

Q: What are applications of thermal expansions?

A: The tendency of matter to change its shape, area, and volume in response to a change in temperature…

Q: what is the purpose of determining the cooling constant?

A: According to the Newton's law of cooling, The cooling rate is proportional to the temperature…

Q: thermal capacity

A:

Q: A house is losing heat at a rate of 1800 kJ/h per °C temperature difference between the indoor and…

A: a) The temperature in Degree Celsius is related to the Kelvin scale as,

Q: Which one of the following materials, all at 50oF (Fahrenheit), feels coldest to the touch? (hint:…

A: c) brass

Q: the thermal conductivity depends on?

A: Objective: To determine the dependency of thermal conductivity.

Q: Give example of negative thermal expansion.

A: Negative thermal expansion (NTE), which is also known as “contraction upon heating,” is of…

Q: What is the relationship between heat and temperature?

A: Heat and temperature are one of the two components in the thermodynamics. Heating a substance…

Q: Why is it important to know the specific heat of materials? please explain

A: Specific heat capacity is a measure of the amount of heat energy required to change the temperature…

Q: if you wanted to know how much the temperature of a particular piece of material would rise when a…

A:

Q: What kind of thermal conductivity and specific heat requirements would you specify for cooking…

A: For cooking utensils, it should have low specific heat. So it can easily attain the temperature of…

Q: A solid steel sphere of radius 20 cm is heated to 500 a container, whose ambient temperature is…

A: We know that the formula of the heat energy radiated per unit time is given as ' E = σeAT4-T04 where…

Q: What are the conditions of thermal equilibrium ?

A: Thermal equilibrium-is the state at which two bodies in contact can exchange energy freely. Systems…

Q: Describe a situation in which heat transfer occurs?

A: Heat: It is the form of energy that takes from the hotter body to the cooler body. The flow of heat…

Q: What is unit of thermal conductivity?

A: The unit of thermal conductivity is defined as :

Q: A thermal conductor is heated at one end , What is the theoretical value of its thermal conductivity…

A: Heat flow rate (Q),