a tungsten and coil has a resistance of 12 ohm at 15 degree celsius is the temperature coefficient of resistance of tungsten is 0.004 calculate the equal resistance at 80 degree Celsius
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Answer:
The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm
Explanation:
The given parameters are;
The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm
The temperature coefficient of resistance of tungsten = 0.004/°C
The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;
R₂ = R₁·[1 + α·(t₂ - t₁)]
Where;
R₁ = The resistance at the initial temperature = 12 ohm
R₂ = The resistance of tungsten at the final temperature
t₁ = The initial temperature = 15 degrees Celsius
t₂ = The final temperature = 80 degrees Celsius
α = temperature coefficient of resistance of tungsten = 0.004/°C
Therefore, we have;
R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm
The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.
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vehicle.
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it occur kinetic energy
when breaking in a hybrid
vehicle.
hope it helps
Answer:
it occur kinetic energy when breaking in a hybrid
vehicle .
hope it is helpful to you ☺️
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Heat transfer is the flow of heat due to temperature difference.
The rate of increase in the energy content of the room is 1560 W.
What is heat transfer?
Heat transfer is the flow of heat due to temperature difference. The heat flow from higher temperature to the lower temperature.
Given information-
Initial temperature of the room is 20 degree Celsius.
The room contains a 40-W light bulb, a 110-W TV set, a 300-W refrigerator, and a 1110-W iron.
The rate of increase in the energy of the room is the difference of energy increasing in the room and the energy leaving to the room.
Thus the rate of increase
Energy inside the room is the sum of all the energies increasing as,
As there is no heat transfer through the walls. Thus the energy leaving to the room is,
Thus put the values in the first equation as,
Thus the rate of increase in the energy content of the room is 1560 W.
Learn more about the heat transfer here;
Final answer:
The rate of increase of the energy content of the room when all electric devices are on is 1560 W.
Explanation:
To determine the rate of increase of the energy content of the room, we need to calculate the total power consumption of the electric devices. Adding up the power ratings, we have:
Total power = 40 W + 110 W + 300 W + 1110 W = 1560 W
Therefore, the rate of increase of the energy content of the room when all of these electric devices are on is 1560 W.
Learn more about Power consumption here:
#SPJ3
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Explanation:
A new culture area for a child could be difficult to adjust in because there will be new things or concepts of the culture about which the student doesn't know anything.
Therefore, parents are the primary source for the child who can help their child by guiding and providing knowledge about the new culture area so that the child can learn it in a better way.
As a result, the child also learns to adjust in a new cultural area.