Answer:
The current when the filament at room temperature is 11.84 A.
Explanation:
Given that,
Thermal coefficient of resistivity 
Initial temperature = 293 K
Voltage = 140 Volt
Final temperature = 2900 K
Current = 0.95 A
Suppose we find the numerical value of the current when the filament is at room temperature
So, We use the equation of resistance of a material changes with temperature
....(I)
Using ohm's law for value of resistance
Put the value of resistance in the equation (I)
Put the value into the formula
Hence, The current when the filament at room temperature is 11.84 A.
Answer:
less energy is needed to heat the house
the roof is a better insulator
Charge is actually either excessive number or electrons or shortage of them.
as you can't destroy the electron or create it - you can't destroy or create charge
<span>The bullfrog is sitting at rest on the log. The force of gravity pulls down on the bullfrog. We can find the weight of the bullfrog due to the force of gravity.
weight = mg = (0.59 kg) x (9.80 m/s^2)
weight = 5.782 N
The bullfrog is pressing down on the log with a force of 5.782 newtons. Newton's third law tells us that the log must be pushing up on the bullfrog with a force of the same magnitude. Therefore, the normal force of the log on the bullfrog is 5.782 N</span>
Locke said that under natural law, all people have the right to life, liberty, and private property; under the social contract, the people could instigate a revolution against the government when it acted against the interests of citizens, to replace the government with one that served the interests of citizens.
