This document contains notes from a Thermal Physics class on various topics:
- Heat flows from hot to cold bodies until thermal equilibrium is reached.
- The Kelvin temperature scale defines absolute zero as 0 K and relates Celsius and Kelvin scales.
- Kinetic theory explains gas properties in terms of molecular motion, assuming molecules are small, hard spheres that collide elastically.
- Internal energy, temperature, heat capacity, phase changes, gas pressure, and the mole concept are defined and related to molecular behavior and properties.
Equations, examples, and questions are provided to illustrate these concepts.
This is a summary of the topic "Energy, work and power" in the GCE O levels subject: Physics. Students taking either the combined science (chemistry/physics) or pure Physics will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
What is HEAT?
Form of energy and measured in JOULES
Particles move about more and take up more room if heated – this is why things expand if heated
It is also why substances change from: solids liquids gases when heated
This is a summary of the topic "Energy, work and power" in the GCE O levels subject: Physics. Students taking either the combined science (chemistry/physics) or pure Physics will find this useful. These slides are prepared according to the learning outcomes required by the examinations board.
What is HEAT?
Form of energy and measured in JOULES
Particles move about more and take up more room if heated – this is why things expand if heated
It is also why substances change from: solids liquids gases when heated
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
2. 11/17/13
Heat flows from hot to cold
Net energy flow stops when their temperatures are the same
i.e. They are in thermal equilibrium
3. 11/17/13
The Kelvin temperature scale
• Tc = Tk - 273
• Tk = Tc +273
• How many times hotter is 100ºC than
33ºC?
• How many times hotter is 10ºC than
0ºC?
• What is your temperature in 0C and 0K
4. Kinetic theory
11/17/13
• Why is it that you can
put out a candle flame
with moist fingers
without hurting yourself
although it is at 750 oC
but it is very painful to
put your fingers into a
cup of hot water at 80
o
C?
5. Heat energy and molecular
movement
• What happens to the molecules when
their temperature increases?
• What is the difference between
internal “heat” energy and
temperature?
• What types of energy do
the molecules have?
11/17/13
6. 11/17/13
Heat energy and temperature
100mL at 200C
400mL at 200C
Which has the “most heat” energy?
Which has the higher temperature?
400mL at 800C
1mL at 2000C
12. Kinetic Theory of Gases
11/17/13
Let’s make some assumptions:
1) Brownian motion suggests that a pure gas consists of
identical molecules in constant random motion.
2) Molecules never stop so collisions between molecules are,
on average, elastic (no kinetic energy is lost).
3) Because gases can be compressed easily the volume of the
individual molecules is negligible compared to the volume
they occupy when moving around.
4) Therefore the molecules are further apart, so we assume
that there are no forces on the molecules except for when
they collide.
13. Internal Energy
11/17/13
Basically, the internal energy of a substance is the sum of the
molecular kinetic and potential energies. Consider a particle:
This particle can store energy by moving
in a number of ways:
1) Moving in three dimensions
2) Vibrating
3) Rotating
These are called “degrees of freedom”,
and each one can store energy.
14. The Mole and Molar mass
One mole of carbon
One mole of green atoms
contains 6x1023 atoms
contains 6x1023 atoms
One mole of “anything” contains 6x1023 atoms (or
molecules)
One mole of carbon
weighs 12g
Define the mole
11/17/13
15. Molar mass
One mole of carbon contains 6x1023 atoms
It weighs 12 grams
How much does one mole of iron weigh?
How many atoms are there in 2 moles of
tungsten?
• How many atoms are the in 0.5 moles of
water?
• Define Avagadro’s constant
• Define the Mole
•
•
•
•
11/17/13
18. Specific Heat Capacity
11/17/13
This can be thought of as “the capacity of an object to store
heat”. Consider some water:
If we heat this beaker up it’s fairly clear
that the amount of energy it gains
depends on how much water there is and
how hot it gets…
Energy
α mass x temperature rise
Energy = mass x s.h.c x temp
E = mcΔT
19. Specific Heat Capacity
11/17/13
How can we do this experimentally?
E = VIt and E = mcΔT
A
12V
V
Possible errors with this experiment:
1) Temperature throughout the liquid
should be the same
Solution:
2) Heat is lost to the surroundings
Solution(s):
24. Thermal Physics Questions
11/17/13
• Specific heat capacities:
• copper400Jkg-1K-1 iron460Jkg-1K1
water4200Jkg-1K-1 ice2100Jkg-1K-1
• Specific latent heat of fusion of ice =
3·3×105Jkg-1
• Molar heat capacities of a diatomic ideal
gas:
Cv = 12·5J(molK)-1 and Cp = 20·8J(molK)-1
25. 11/17/13
• Question 1
• A piece of metal of mass 0·2kg is heated to a temperature of
200°C. It is then put into 0·2kg of water at 20°C in a container of
negligible heat capacity. The "final" temperature, after stirring, is
40°C. Calculate the specific heat capacity of the metal.
• Question 2
• A piece of metal of mass 100g, has a temperature of 100°C. It is
put into 100g of water at 20°C in a container of negligible heat
capacity. After stirring, the maximum temperature of the
"mixture" (metal and water) is 27·5°C. Calculate the specific heat
capacity of the metal.
• Question 3
• The specific heat capacity of water is very high. What effect does
this have on the weather conditions experienced by people living on
islands?
• Question 4
• How long will it take to change the temperature of 200kg of water
from 15°C to 40°C, using a heater of power 3kW. Assume that all
the thermal energy remains in the water.
26. 3 Phases of matter
11/17/13
Solids –fixed positions, many strong bonds (potential energy)
Liquids – Changing positions, many temporary bonds
Gases – Free moving, no bonds
28. Change of state (Melting and
boiling)
Heat energy is going to
potential energy only,
therefore there is no rise in
temperature.
Heat energy is
going to
internal EK
11/17/13
29. Temp/OC
150
100
11/17/13
Heating ice
This flat line shows where energy is being
used to break the temporary bonds for
boiling. The amount of energy needed to
turn 1kg of a liquid into a gas is called the
Specific Latent Heat of Vaporisation L.
50
0
-50
Time/s
This flat line shows where energy is being
used to break bonds – this has to be done
during melting. The amount of energy
needed to turn 1kg of a solid into a liquid is
called the Specific Latent Heat of Fusion L.
31. Melting Q’s
11/17/13
• Question 1
• A piece of ice at -20°C is put into a copper calorimeter of
mass 0·2kg which contains 0·15kg of water at 20°C. The
water is stirred until all the ice has melted. At this time the
temperature of the water (and calorimeter) is 15°C.
Calculate the mass of the piece of ice. (8 grammes).
• Question 2
• A refrigerator is capable of removing 50J of heat per
second from a container of water. How long will it take to
change 2kg of water at 10°C into ice at -5°C? Assume that
the rate of removal of heat remains constant and that the
container has negligible heat capacity. Are these
assumptions likely to be valid in practice?
32. Latent Heat of Fusion
11/17/13
From the previous slide we can say that the energy needed to
melt water is given by…
Energy = mass x specific latent heat of fusion
To work out L
experimentally you could…
VIt = mL
A
12V
V
36. Evaporation and Boiling
11/17/13
• Boiling occurs at a fixed temperature
• Evaporation occurs at any
temperature
• Boiling happens throughout the body
of the liquid
• Evaporation only happens at the
surface of the liquid.
37. 11/17/13
Pressure
Pressure depends on two things:
1) How much force is applied, and
2) How big (or small) the area on which this force is
applied is.
Pressure can be calculated using the equation:
F
Pressure (in N/m2) = Force (in N)
Area (in m2)
OR in cm2 and N/cm2
P
A
38. Some pressure questions
Pressure = force
P=F
area
11/17/13
A
1) Calculate the pressure exerted by a 1000N elephant when
standing on the floor if his feet have a total area of 1m 2.
2) A brick is rested on a surface. The brick has an area of
20cm2. Its weight is 10N. Calculate the pressure.
3) A woman exerts a pressure of 100N/cm2 when standing on
the floor. If her weight is 500N what is the area of the
floor she is standing on?
4) (Hard!) The pressure due to the atmosphere is
100,000N/m2. If 10 Newtons are equivalent to 1kg how
much mass is pressing down on every square centimetre of
our body?
39. Kinetic theory
11/17/13
•Particles collide with the
walls of the container
•They change their
momentum
•They exert a force on the
wall
•This creates “pressure”.
The collisions of the molecules with the container
(not with each other) create the pressure.
41. 11/17/13
Assumptions of the kinetic theory
1. Molecules behave as if they were hard, smooth,
elastic spheres. (i.e. the collisions are perfectly
elastic)
2. Molecules are in continuous rapid, random motion.
3. The average kinetic energy of the molecules is
proportional to the absolute temperature of the
gas.
4. The molecules do not exert any appreciable
attraction on each other.
5. The volume of the molecules is infinitesimal when
compared with the volume of the gas.
6. The time spent in collisions is small compared with
the time between collisions.
42. 11/17/13
Macroscopic behaviour of a gas
• Why does the volume of a gas expand
when heated?
• Why does the pressure of a gas
increase when heated?
• How does the temperature relate to
the molecular behaviour?