Is the Calculation of Thermal Energy in Mixing Water and Steam Accurate?

In summary, thermal energy is the energy that comes from heat and is measured in joules or calories. It can come from sources such as the sun, geothermal heat, chemical reactions, and mechanical work. Thermal energy transfer occurs through conduction, convection, and radiation. It has various practical applications, including heating and cooling systems, cooking, electricity generation, and industrial processes, and is also used in transportation.
  • #1
physicsstudent111
11
2
Homework Statement
How much energy is required to change one quarter of 8.0 kg of water at 25 degrees celsuis into steam(100 degrees celcuis)
Relevant Equations
Q=mct
Q=mLv
Q=Qwarm water+Qsteam
Q=mct+mLv
Q=(8kg)(4200J)(100C-25C)+(2kg)(2.3*10 to the power of 6 J/Kg)
Q=7.12*10 to the power of 6 J
Is this the correct answer?
 
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  • #2
Why only 2kg water turning to steam?
 
  • #3
Because that's what the question states
 
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  • #4
Ah great, I missed the one quarter.

Answer is correct. Keep in mind correct significant digits and usage of prefix
 
Last edited:
  • #5
Thank you!
 
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FAQ: Is the Calculation of Thermal Energy in Mixing Water and Steam Accurate?

1. What is thermal energy?

Thermal energy is a type of kinetic energy that is generated by the movement of particles within a substance. It is the total energy of all the particles in a system and is directly related to the temperature of the substance.

2. How is thermal energy measured?

Thermal energy is typically measured in joules (J) or calories (cal), although other units such as BTUs (British Thermal Units) are also used. It can be measured using specialized equipment such as thermometers, calorimeters, or thermal cameras.

3. What are the sources of thermal energy?

Thermal energy can be generated from various sources, including the sun, chemical reactions, nuclear reactions, and friction. It is also a byproduct of many everyday activities, such as cooking, exercising, and using electronic devices.

4. How is thermal energy transferred?

Thermal energy can be transferred through three main mechanisms: conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between two objects, convection is the transfer of heat through the movement of fluids, and radiation is the transfer of heat through electromagnetic waves.

5. What are some practical applications of thermal energy?

Thermal energy has many practical applications, including heating buildings, cooking food, generating electricity, and powering vehicles. It is also used in various industries, such as manufacturing, to melt, shape, and join materials. In addition, thermal energy is essential for many biological processes, such as regulating body temperature and digestion.

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