Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C.
I forgot the formula
heat in = mass * specific heat of copper * temperature rise
assuming it does not change state and copper does not melt at that temp.
https://www.engineeringtoolbox.com/specific-heat-metals-d_152.html
Heat in= (2kg)(.34)(100)
68
The formula to calculate the heat energy needed to change the temperature of a substance is:
Q = mcΔT
Where:
Q = heat energy (in joules)
m = mass of the substance (in kilograms)
c = specific heat capacity of the substance (in joules per kilogram per degree Celsius)
ΔT = change in temperature (in degrees Celsius)
For copper, the specific heat capacity is approximately 390 J/kg°C.
Using the given values:
m = 2 kg
ΔT = 110°C - 10°C = 100°C
c = 390 J/kg°C
Now, we can substitute the values into the formula and calculate the heat energy (Q):
Q = (2 kg) * (390 J/kg°C) * (100°C)
Q = 78,000 J
Therefore, the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C is 78,000 joules.
To calculate the heat energy needed to change the temperature of a substance, you can use the formula:
Q = m * c * ΔT
Where:
Q = Heat energy (in joules)
m = Mass of the substance (in kilograms)
c = Specific heat capacity of the substance (in joules per kilogram per degree Celsius)
ΔT = Change in temperature (in degrees Celsius)
For copper, the specific heat capacity is approximately 385 J/kg°C.
Given:
m = 2 kg
c = 385 J/kg°C
ΔT = 110°C - 10°C = 100°C
Plugging in the values into the formula:
Q = 2 kg * 385 J/kg°C * 100°C
Q = 77,000 J
Therefore, the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C is 77,000 joules.