Understanding Specific Heat Capacity

This page delves into the concept of specific heat capacity, providing definitions, examples, and practical applications. The content is designed to help students grasp the fundamental principles of heat transfer and temperature change in materials.

Definition: Ciepło właściwe, or specific heat capacity, is the amount of heat required to raise the temperature of 1 kg of a substance by 1°C (or 1 K).

The page presents a table with specific heat capacity values for different materials:

• Water: 4200 J/(kg·K)
• Ice: 2100 J/(kg·K)
• Glass: 840 J/(kg·K)
• Copper: 380 J/(kg·K)

Highlight: The specific heat capacity of water is notably higher than other common materials, which explains its effectiveness as a coolant and its importance in climate regulation.

The document introduces the formula for calculating heat energy:

Vocabulary: The wzór na ciepło Q (formula for heat energy) is Q = c · m · ΔT, where:

• Q is the heat energy in Joules (J)
• c is the specific heat capacity in J/(kg·K)
• m is the mass in kilograms (kg)
• ΔT is the change in temperature in Kelvin (K) or degrees Celsius (°C)

An example problem is presented to illustrate the application of this formula:

Example: Calculate the energy required to raise the temperature of 3 kg of water by 2 K.

Given:

• m = 3 kg
• ΔT = 2 K
• c (water) = 4200 J/(kg·K)

Solution: Q = 4200 J/(kg·K) · 3 kg · 2 K = 25,200 J

This example demonstrates jak obliczyć ciepło właściwe (how to calculate specific heat) in a practical scenario, reinforcing the understanding of the concept and its mathematical application.

The page concludes with the solved example, showing that 25,200 J of energy is required to raise the temperature of 3 kg of water by 2 K, highlighting the significant amount of energy needed to change the temperature of water due to its high specific heat capacity.