# Homework Help: Thermal Energy Question

• yamm14
In summary, Thermal energy is the energy resulting from the movement of particles within a substance and is measured in joules or calories. It is affected by an object's mass, temperature, and specific heat capacity, and can be transferred through conduction, convection, and radiation. Common uses of thermal energy include heating, cooking, electricity generation, and industrial processes.
yamm14
Homework Statement
A 150g steel spoon (constant = 420J/kg degrees Celsius) initially at 19 degrees Celsius is placed into a 250mL cup of water at 89 degrees Celsius. When both objects reach the same temperature what temperature will that be?
Relevant Equations
change in energy = (mass)(constant)(change in temperature)
water constant = 4200J (kg degrees Celsius)
I don't know what to do!

Delta2
The spoon will cool down and lose energy, the water will warm up and gain energy. Use conservation of energy.

Delta2
yamm14 said:
I don't know what to do!

Homework Help Guidelines
Pay some attention to #4 and read the section it references. Thankyou

## What is thermal energy?

Thermal energy is the energy that an object or a system has due to the movement and vibration of its particles. It is also known as heat energy and is measured in Joules (J).

## How is thermal energy related to temperature?

Thermal energy is directly proportional to temperature. This means that the higher the temperature, the more thermal energy an object or system has. However, the amount of thermal energy also depends on the mass and material of the object.

## What is the difference between thermal energy and heat?

Thermal energy is the total energy of all the particles in an object or system, while heat is the transfer of thermal energy from one object to another due to a temperature difference. In other words, thermal energy is the potential energy stored in an object, while heat is the energy in motion.

## How is thermal energy measured?

Thermal energy is measured in Joules (J) using instruments such as a calorimeter or a thermometer. The amount of thermal energy can also be calculated using the equation Q = mcΔT, where Q is the thermal energy, m is the mass of the object, c is the specific heat capacity of the material, and ΔT is the temperature change.

## What are some real-life applications of thermal energy?

Thermal energy is used in various applications, such as heating homes and buildings, cooking food, generating electricity, and powering engines. It is also important in industries such as manufacturing, transportation, and healthcare. Additionally, thermal energy is harnessed for renewable energy sources like solar and geothermal power.

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