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Can a thermal conduction resistance be applied to a solid cylinder o sphere?
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What is the Dimensional formula of thermal resistance?
no
What is the transfer of thermal energy between two bodies which are at different temperatures?
Thermal energy can be transferred by conduction, convection, or radiation. The formulae for the rate of transfer - if that's what you are after - vary, depending on which type of transfer is predominant.
Is r-value good or bad?
it is a good thing i think R Value is the thermal resistance of a given material. The higher the R Value the more thermal resistance and the better the insulation. So, an R48 roof system is warmer than an R32 roof system. All insulation materials are rated by their R Value. An inch of rigid insulation has a higher R Value than an inch of fiberglass insulation. Check with the insulation manufacturer for the R Value.
What affects the pendulum?
Many things.Some of these are:movement of its point of suspension,precession caused by the earth's rotation,air resistance, wind,very massive objects brought nearby,thermal expansion or contraction,humidity or other factors altering the means of suspension.
How do you use thermal energy?
people use thermal energy to cook and heat our bodies and for hot air balloons
What is the definition of thermal conduction?
The definition of thermal conduction is heat transfer. Thermal conduction is when heat is transferred from one source to another.
Make a sentence using the words thermal conduction?
The thermal conduction of water is much greater than that of wool.
Is thermal energy transferred through conduction convection or radiation?
thermal energy can transfer through conduction, convention and radiation
What are types of conduction?
Thermal and Electric
When does thermal conduction in a solid stop?
In a solid, thermal conduction will only stop when the entire solid object has reached the same temperature.
Is a thermal conduction a physical property?
Thermal conductivity is a Physical property
Do semiconductor material have a very high resistance at room temperature?
No. As temperature increases, resistance of semiconductors decrease. This is because semiconductors have a small energy gap between their valence band and conduction band (in the order of 1 eV). Electrons must exist in the conduction band in order for the material to conduct but electrons exist in the valence band naturally. The electrons gain thermal energy for surroundings and jumps the energy gap from valence band to conduction band and hence, the SC material more readily conducts. As temperature increases, electrons can gain more thermal energy, more electrons can enter the conduction band and hence, resistance decreases.
What is the difference between conduction convection and thermal energy?
Conduction and convection are two ways in which thermal energy is transferred, the third way is by radiation.
What is Definition of thermal conductivity?
The definition of thermal conduction is heat transfer. Thermal conduction is when heat is transferred from one source to another.
How does the increase in thermal energy of the cylinder relate to the mass of the falling object?
Thermal energy is generated by the friction with the air (air resistance), it does not depend on the mass but the surface area of a falling object.
How does a flask reduce heat loss by conduction and radiation?
Using vacuum as an insulator avoids heat loss by conduction. Heat transfer is minimised by reflective silver surfaces that are applied to the flask. This prevents thermal radiation from entering and escaping the flask.
How does a thermos flask reduce heat loss by conduction?
Using vacuum as an insulator avoids heat loss by conduction. Heat transfer is minimised by reflective silver surfaces that are applied to the flask. This prevents thermal radiation from entering and escaping the flask.
