0
1. the filament of electric bulb is made up of tungsten as it has melting point of 3380 degree & it cannot be oxidised
2. electric fuse As a safely device which works on heating effect of electric current. the fuse wire is made up of copper, lead & tin. if a current larger than the specified value close to the circuit, the temperature of fuse wire increase. this melts the fuse wire & breaks the circuit.
What else can I help you with?
How many joules would be required to heat 0.5kg of aluminum?
The specific heat capacity of aluminum is 0.897 J/g°C. To calculate the energy required to heat 0.5kg of aluminum by a certain temperature change, you would use the formula: Energy = mass x specific heat capacity x temperature change If you have the temperature change, you can plug the values into the formula to find the total energy in joules.
Suppose you want to heat 40g of water by 20c how many joules of heat are required?
334.8 Joules
How do you convert mg into joules?
You cannot.A milligram is a measure of mass while a Joule is a measure of energy. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
How many joules of heat are required to heat 20.5g of tin from 30degrees c to 230 degrees c?
The specific heat capacity of tin is 0.227 J/g°C. Using the formula Q = mcΔT, where Q is the heat energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature, the heat energy required would be approximately 920.1 Joules.
What is the change in internal energy if 20 joules of heat is released from a system and the system does 50 joules of work on the surroundings?
-70 Joules
What is the heat formula?
The formula for calculating heat is Q = mcΔT, where Q represents the amount of heat transferred, m is the mass of the object, c is the specific heat capacity of the object, and ΔT is the change in temperature.
How can I convert heat into watts?
To convert heat into watts, you can use the formula: Power (in watts) Heat (in joules) / Time (in seconds). This formula helps you calculate the amount of power generated from the heat energy over a specific period of time.
What unit of measurement is used to record heat transfer?
Heat transfer is measured in Joules. At times, teachers look for calories, so the conversion for Calories to Joules is 1 calorie = 4.184 joules. The formula used for heat transfer is q = m(T)C .... q is amount of heat transferred, m is mass, T is the change in temperature, C is the specific heat.
What is the formula for finding joules?
There isn't a formula for finding joules. It is a way for finding a force or giving an example.
What is the bomb calorimeter formula used to calculate the heat released during a chemical reaction?
The bomb calorimeter formula used to calculate the heat released during a chemical reaction is: q C x T where: q heat released (in joules) C calorimeter constant (in joules per degree Celsius) T change in temperature (in degrees Celsius)
How many joules would be required to heat 0.5kg of aluminum?
The specific heat capacity of aluminum is 0.897 J/g°C. To calculate the energy required to heat 0.5kg of aluminum by a certain temperature change, you would use the formula: Energy = mass x specific heat capacity x temperature change If you have the temperature change, you can plug the values into the formula to find the total energy in joules.
What is the Unit of heat that is equivalent to 4.184 joules?
The unit of heat equivalent to 4.184 joules is the calorie.
How much heat is generated by 1700 joules of work?
The heat generated by 1700 joules of work depends on the efficiency of the process. In an ideal case where all the work is converted into heat, the heat generated would also be 1700 joules. However, in real-world scenarios, the heat generated would be less due to energy losses.
Suppose you want to heat 40g of water by 20c how many joules of heat are required?
334.8 Joules
What is the efficiency of a cars engine when heat input 2000000 joules and waste heat is 150000 joules?
The efficiency of the car's engine can be calculated using the formula: Efficiency = (Useful energy output / Total energy input) * 100%. In this case, the useful energy output is the heat used for work, which is (2000000 - 150000) Joules. Therefore, the efficiency would be ((2000000 - 150000) / 2000000) * 100% = 92.5%.
What is the heat change when 55.0g water cools from 60 degree celsius to 25.5?
To calculate the heat change, you need to use the formula: q = mcΔT. First, calculate the specific heat capacity of water (4.18 J/g°C). Then calculate the change in temperature (60°C - 25.5°C). Finally, substitute these values into the formula along with the mass of water (55.0g) to find the heat change in joules.
How do you convert mg into joules?
You cannot.A milligram is a measure of mass while a Joule is a measure of energy. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
