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Does a TV produce thermal energy?
Yes, a TV set produces thermal energy by converting electrical energy with the use of resistance.
What is the difference between digital and mercury thermometer?
Digital thermometers measure electrical resistance and Mercury thermometers measure thermal expansion.
What is the working principle of electric iron?
Heat generated by electrical resistance. Thermal mass of a metal plate.
What is insulating material used for?
insulating materials have low thermal/electrical conductivity values and hence can be used in applications where resistance to heat or resistance to the passage of electrical current is required.
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.
What is the Dimensional formula of thermal resistance?
no
Which has the greater resistance thick wire or a thin of the same length?
The thermal resistance of a wire is proportional to ln(r2/r1), meaning that a thicker wire has a greater thermal resistance.
What is the formula for thermal?
The formula for thermal energy is mc(deltaT) equals thermal energy, which means that multiplication of change in temperature by mass and specific heat gives you the thermal energy.
What is the formula to work out the maximum volume of a folded square?
A square is two dimentional and has an area (side X side = # of square inches) A square has no volume unless it is three dimentional, in which case, it would be a cube and not a square.
properties of plastic?
Strength. Weather Resistance. Fire Resistance. Durability. Dimensional Stability. Chemical Resistance. Thermal Resistance. Working Conditions.
What is thermal risistance?
Thermal resistance is a measure of a material's ability to resist the flow of heat through it. It is used to quantify how well a material can insulate against heat transfer. A lower thermal resistance value indicates better thermal insulation properties.
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
What increases the?
The thermal vibration of the atoms in the material increases the resistance of that substance. The resistance is greatly depends on temperature.
What are the sources of resistance to change?
A: There is only one source thermal
Why is a chemical property of matter?
Examples: - chemical reactivity - flammability - resistance to corrosion - resistance to thermal degradation etc.
How do you calculate contact resistance?
Resistance is resistance , no matter if it is contact resistance or any other resistance. And formula is R = V / I.
What is the relationship between the resistance of a material and the amount of thermal energy that is released when electrons move through the conductor?
It isn't QUITE as simple as that. The relevant formula is: (power dissipated) = (current squared) x (resistance)So, the amount of energy dissipated not only depends on the resistance, but also on the current (that's what is measured in amperes). For example, if there is no current, there will be no power dissipated. The formula is about POWER; to get ENERGY, which is what you asked for, you need to multiply power by time.
