Understanding Ciepło Właściwe (Specific Heat)
This page introduces the concept of ciepło właściwe (specific heat) and provides a practical example of its application in thermodynamics.
The page begins with a clear definition of ciepło właściwe. It is described as the amount of heat (energy) required to raise the temperature of 1 kg of a substance by 1°C. This fundamental concept is crucial for understanding heat transfer and energy calculations in physics and engineering.
Definition: Ciepło właściwe is the amount of heat energy needed to increase the temperature of 1 kg of a substance by 1°C.
The page then presents the general formula for calculating heat energy:
Q = m · c · ΔT
Where:
- Q represents heat energy
- m is the mass of the substance
- c is the ciepło właściwe (specific heat) of the substance
- ΔT is the change in temperature
Highlight: The formula Q = m · c · ΔT is essential for solving problems related to heat transfer and temperature changes.
An example problem is provided to illustrate the practical application of this concept:
Example: Calculate the energy needed to heat 2 kg of water from 20°C to 30°C.
The problem is solved step by step:
-
Given information:
- c (specific heat of water) = 4100 J/(kg·K)
- m (mass of water) = 2 kg
- ΔT (temperature change) = 10°C
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Solution:
Q = 2 kg × 4100 J/(kg·K) × 10°C = 84,000 J
This example demonstrates how to use the formula to calculate the heat energy required for a specific temperature change in a given mass of water.
Vocabulary: J (Joule) is the unit of energy used in these calculations.
The page effectively combines theoretical knowledge with practical application, helping students understand how to apply the concept of ciepło właściwe in real-world scenarios. This approach is particularly useful for students preparing for exams or solving ciepło właściwe zadania (specific heat problems) in physics classes.
