This document discusses specific heat capacity and how it relates to heat transfer and temperature change. Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius. Water has a relatively high specific heat of 4.184 J/g°C, while other substances like aluminum (0.897 J/g°C) and iron (0.449 J/g°C) have lower specific heat capacities. The specific heat capacity of a substance determines how quickly or slowly it will heat up when heat is added. The document also provides an equation to calculate the heat absorbed or released given the specific heat, mass, and temperature change of a substance.
Different objects have different heat capacity. Sand has a low heat capacity and gets hot quickly while sea water has a high heat capacity and gets hot slowly. Heat capacity of an object increases when the mass of the object increases. For example, the water in a full kettle takes a longer time to boil compared to the water in a half-fi lled kettle. This shows that water of bigger mass has a higher heat capacity compared to water of smaller mass.
Several daily situations involving heat capacity also discussed.
4.2 Specific Heat Capacity
4.2.1 Explain heat capacity, C.
4.2.2 Define specific heat capacity of a material, c
4.2.3 Experiment to determine:
(i) the specific heat capacity of water
(ii) the specific heat capacity of aluminium
4.2.4 Communicate to explain the applications of specific heat capacity in daily life, material engineering and natural phenomena.
4.2.5 Solve problems involving specific heat capacity
2.2.3 Thermal capacity (heat capacity)
Core
Relate a rise in the temperature of a body to an increase in its internal energy
Show an understanding of what is meant by the thermal capacity of a body
Supplement
• Give a simple molecular account of an increase in internal energy
• Recall and use the equation thermal capacity = mc
• Define specific heat capacity
• Describe an experiment to measure the specific heat capacity of a substance
• Recall and use the equation change in energy = mcΔT
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Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
1. Develop a comprehensive understanding of the fundamental principles and concepts that form the foundation of sustainability within corporate environments.
2. Explore the sustainability implementation model, focusing on effective measures and reporting strategies to track and communicate sustainability efforts.
3. Identify and define best practices and critical success factors essential for achieving sustainability goals within organizations.
CONTENTS
1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
3. Measures and Reporting in Sustainability
4. Sustainability Implementation & Best Practices
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Memorandum Of Association Constitution of Company.pptseri bangash
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
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Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
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Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
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Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
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2. Temperature vs. Heat
• Temperature is the
measurement of the avg. KE
of the particles in matter.
• Heat energy that flows
from a warmer object to a
cooler object.
3.
4. 4
A. When you touch ice, heat is transferred
from
1) your hand to the ice
2) the ice to your hand
B. When you drink a hot cup of coffee, heat
is transferred from
1) your mouth to the coffee
2) the coffee to your mouth
Learning Check
5. Have you ever noticed that on a
hot summer day the pool is
cooler than the hot cement?
OR maybe that the ocean is
cooler than the hot sand?
6.
7.
8. Specific Heat Capacity
1 calorie = 4.184 J
1,000 J = 1 KJ
4,184 J = 1 Kcal = 1 Calorie
Specific Heat: The amount of heat required to
raise the temperature of 1 gram of a substance
1 degree Celsius.
10. LecturePLUS Timberlake 99 10
Learning Check
A. A substance with a large specific heat
1) heats up quickly 2) heats up slowly
B. When ocean water cools, the surrounding air
1) cools 2) warms 3) stays the same
C. Sand in the desert is hot in the day, and cool
at night. Sand must have a
1) high specific heat 2) low specific heat
11. Equation:
q = c x m x ΔT
ΔT = Tfinal – Tinitial
q = the heat absorbed or released
c = the specific heat of the substance
m = the mass of the sample in grams
ΔT = change in temperature
12.
13. 1.) Copper metal has a specific heat (Cp) of
0.385 J/g⁰C. Calculate the amount of heat (J)
required to raise the temperature of 22.8 g of
copper from 20.0⁰C to 875⁰C.
14. 2) What is the specific heat of a 25.0 g
substance that absorbs 493.4 J,
and raises the temperature from 12.0⁰C to
34⁰C?
15. 3) It takes 1,250 J of energy to heat a certain
sample of pure silver from 12.0 0C to 15.2 0C.
Calculate the mass of the sample of silver.
