Lecture02
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The document discusses forces and equilibrium examples in physics. It covers textbook sections on Newton's laws of motion, free body diagrams, friction, gravity, springs, tension, and two-dimensional examples. Examples include calculating the force needed to keep a block from sliding down an incline and finding the tension in a string suspending a mass.
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![Forces: Equilibrium Examples ,[object Object],Physics 101: Lecture 02 Phys 101 URL: http://online.physics.uiuc.edu/courses/phys101 Read the course description & FAQ! Office hours start Monday; see web page for locations & times. Exam I](https://image.slidesharecdn.com/lecture02-111229013923-phpapp01/85/Lecture02-1-320.jpg)
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The document discusses analyzing wedges using free body diagrams (FBDs). It explains that to determine the force required to push or pull a wedge, FBDs must be drawn of both the wedge and the object on top of it. The key steps are to assume impending slippage, draw the FBDs showing all relevant forces, and then apply equations of equilibrium and friction to solve for the required force. An example problem demonstrates this process and finds the minimum force needed to remove a wedged object.
Forces
The document describes various concepts related to forces including:
1) Different types of forces such as magnetic, weight, tension, contact, and friction forces.
2) The effects of forces including changing an object's motion, speed, direction, shape, and putting a stationary object into motion.
3) The relationship between net force, mass, and acceleration given by F=ma.
4) How to calculate weight, distinguish it from mass, and how it depends on gravitational strength.
Similar to Lecture02 (20)
Lecture 06 wave energy. interference. standing waves.
Lecture 06 wave energy. interference. standing waves.
More from oyunbileg06
Lect28 handout
This document summarizes key concepts from a physics lecture on special relativity. It discusses how measurements of time, length, and simultaneity depend on the observer's inertial reference frame. The three main points are: 1) time dilation causes moving clocks to run slow relative to proper time in the rest frame; 2) length contraction makes moving objects appear shorter than their proper length; 3) whether two events occur simultaneously is frame-dependent. Examples are provided to illustrate time dilation, length contraction, and their consequences.
Lect27 handout
1) Nuclear reactions conserve nucleon number, charge, and energy/momentum. Alpha particles are nuclei, beta particles are electrons, and gamma particles are high-energy photons.
2) Radioactive decay follows first-order kinetics described by half-life, the time for half of the radioactive atoms to decay. Carbon dating relies on measuring the remaining ratio of 14C to 12C isotopes to determine the age of once-living materials.
Lect26 handout
The document discusses x-rays and their production. It explains that x-rays have wavelengths between 0.01 to 10 nm and are produced when high energy electrons interact with atoms. Bremsstrahlung x-rays are produced when electrons are slowed by atoms, while characteristic x-rays occur when electrons knock inner shell electrons out of atoms, causing higher shell electrons to fill the gaps and emit photons. The document also discusses nuclear physics concepts like atomic and mass numbers.
Lect25 handout
The document discusses the quantum numbers that describe the electron states in an atom. It explains that each electron is labeled by four quantum numbers: principal (n), angular momentum (l), magnetic (ml), and spin (ms). The Pauli Exclusion Principle states that each quantum state can contain only one electron, which explains the filling order and structure of the periodic table.
Lect24 handout
1) The Bohr model of the atom provides accurate predictions of electron energy levels but is not physically realistic, as electrons do not actually orbit the nucleus in defined orbits.
2) Rutherford's nuclear model, based on his gold foil experiment, established that atoms are mostly empty space with a small, dense positively charged nucleus at the center.
3) Bohr's model incorporated Rutherford's nuclear atom and quantized electron orbits and energies, allowing it to predict spectral lines emitted by atoms. However, quantum mechanics is needed for a full description of electrons in atoms.
Lect22 handout
The document summarizes some key aspects of quantum mechanics that were at odds with classical physics, including three early indications:
1) Blackbody radiation - Max Planck found electromagnetic energy is radiated in discrete chunks called photons to explain blackbody radiation spectra.
2) Photoelectric effect - Einstein explained light comes in photons and each metal requires a minimum photon energy to eject electrons.
3) Wave-particle duality - Experiments showed electrons and other particles can behave as waves through interference and as particles through localized interactions, seemingly contradicting each other.
Lect21 handout
The document discusses various optical phenomena related to diffraction and interference of light, including:
1) Light passing through multiple slits will produce constructive interference when the path length difference is an integer multiple of the wavelength, and destructive interference when it is an odd multiple of half the wavelength.
2) Single slit diffraction causes a diffraction pattern on a screen with alternating bright and dark bands due to interference effects between light rays emerging from different parts of the slit.
3) The resolving power of an aperture, or the minimum angular separation needed to distinguish two objects, is determined by the wavelength of light and the diameter of the aperture, with smaller wavelengths and larger apertures allowing better resolution.
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5th LF Energy Power Grid Model Meet-up Slides
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
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During the hour, we’ll take you through:
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
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Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
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The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
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Artificial Intelligence for XMLDevelopment
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Editor's Notes
- Could add the truck example/demo, or the dog on leash example.
- Key idea here is we can do each direction independently!
- Maybe simple demo, add twice as much mass, get twice the stretching before showing the slide. Also make note that this is NOT as big a deal as Newton’s laws. Just an example of a contact force.
- Maybe simple demo, add twice as much mass, get twice the stretching before showing the slide. Also make note that this is NOT as big a deal as Newton’s laws. Just an example of a contact force. First solve for k = 5*9.8/8 = 6.125 Then FBD
- Tell them any choice is OK, but this way only have 1 force to decompose
- T = W sin(theta) = 16.8 N
- Tell them any choice is OK, but this way only have 1 force to decompose
- Could do this on over head to help people work through it.
- hhh