5/20/2023 0 Comments Impulse physics video tennisCan you think of some? Certain sports rely primarily on elastic collisions that conserve momentum, such as pool or billiards, while others use inelastic collisions to make the game more challenging. Many sports incorporate collisions and momentum as part of game play. This chart illustrates the range of bounciness for eight types of balls.Ĭopyright © Courtesy of The Exploratorium. The degree to which something is elastic or inelastic is dependent on the material of the object. If there were not, rubber balls would bounce forever. Rubber balls, pool balls (hitting each other), and ping-pong balls may be assumed extremely elastic, but there is still some bit of inelasticity in their collisions. In the real world, there are no purely elastic or inelastic collisions. Instead, all the energy goes into deforming the ball into a flat blob. It does not bounce at all and loses its kinetic energy. A dropped ball of clay demonstrates an extremely inelastic collision. Instead, the kinetic energy is transferred to another kind of energy such as heat or internal energy. In an inelastic collision, the total momentum of the system is conserved, but the total kinetic energy of the system is not conserved. At impact, the cue ball stops, but transfers all of its momentum to the other ball, resulting in the hit ball rolling with the initial speed of the cue ball. Watch a moving cue ball hit a resting pool ball. Another elastic collision example may be observed in a game of pool. An elastic collision example might involve a super-bouncy ball if you were to drop it, it would bounce all the way back up to the original height from which it was dropped. There are two types of collisions that relate to momentum: elastic and inelastic.Īn elastic collision follows the Law of Conservation of Momentum, which states "the total amount of momentum before a collision is equal to the total amount of momentum after a collision." In addition, the total kinetic energy of the system (all the objects that collide) is conserved during an elastic collision. Sometimes when moving objects collide into each other, momentum can be transferred from one object to another. For example, a heavier object going the same speed as a lighter object would have greater momentum. The amount of momentum an object has depends both on its mass and how fast it is going. Momentum can be thought of as 'mass in motion' and is given by the expression: Recognize that difference surfaces and materials promote different types of collisions.Understand that momentum depends on both mass and velocity.Learning how the human body and equipment interacts with the ball during impact or how the human body interacts with the inside of a car during a crash, helps engineers design better sports equipment and safer vehicles.Īfter this activity, students should be able to: Mechanical engineers consider momentum and collisions when designing vehicles. Some engineers dedicate their research to understanding collisions between balls and bats others study the effects of a golf ball colliding with the head of a golf club. Sports engineering is becoming a popular specialty field of study. This engineering curriculum aligns to Next Generation Science Standards ( NGSS). Students examine how different balls react when colliding with different surfaces, giving plenty of opportunity for them to see the difference between elastic and inelastic collisions, learn how to calculate momentum, and understand the principle of conservation of momentum.
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Includes music, supplemental graphics that display the Moon's orbit, subsolar and sub-Earth points, and the Moon's distance from Earth at true scale. The phase and libration of the Moon for 2021, at hourly intervals. The descriptions of the print resolution stills also assume a northern hemisphere orientation. The third quarter Moon is often surprisingly conspicuous in the daylit western sky long after sunrise.Ĭelestial north is up in these images, corresponding to the view from the northern hemisphere. The full Moon rises at sunset and is high in the sky at midnight. By first quarter, the Moon is high in the sky at sunset and sets around midnight. The cycle begins with the waxing (growing) crescent Moon visible in the west just after sunset. The most noticed monthly variation in the Moon's appearance is the cycle of phases, caused by the changing angle of the Sun as the Moon orbits the Earth. The two extremes, called perigee (near) and apogee (far), differ by as much as 14%. The Moon also approaches and recedes from us, appearing to grow and shrink. The roll angle is given by the position angle of the axis, which is the angle of the Moon's north pole relative to celestial north. It appears to roll back and forth around the sub-Earth point. The Moon is subject to other motions as well. The sub-Earth point is also the apparent center of the Moon's disk and the location on the Moon where the Earth is directly overhead. The sub-Earth point gives the amount of libration in longitude and latitude. The word comes from the Latin for "balance scale" (as does the name of the zodiac constellation Libra) and refers to the way such a scale tips up and down on alternating sides. When a month is compressed into 24 seconds, as it is in this animation, our changing view of the Moon makes it look like it's wobbling. Because of the tilt and shape of its orbit, we see the Moon from slightly different angles over the course of a month. The Moon always keeps the same face to us, but not exactly the same face. The pummeled, craggy landscape thrown into high relief at the terminator would be impossible to recreate in the computer without global terrain maps like those from LRO. This is especially evident in the long shadows cast near the terminator, or day-night line. Its laser altimeter ( LOLA) and camera ( LROC) are recording the rugged, airless lunar terrain in exceptional detail, making it possible to visualize the Moon with unprecedented fidelity. Lunar Reconnaissance Orbiter ( LRO) has been in orbit around the Moon since the summer of 2009. Until the end of 2021, the initial Dial-A-Moon image will be the frame from this animation for the current hour. The animation archived on this page shows the geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2021, at hourly intervals. The data in the table for the entire year can be downloaded as a JSON file or as a text file. Hover over the image to reveal the animation frame number, which can be used to locate and download the corresponding frame from any of the animations on this page, including unlabeled high-resolution Moon images. See also the Dial-A-Moon for the May 26 total lunar eclipse.Ĭlick on the image to download a high-resolution version with feature labels and additional graphics. 5/19/2023 0 Comments Cinema grade pcLearn about more our flair and how to get your own here. When you see verified pro flair, you can be sure the commenter works in the industry and has years of experience. The Basic version of Cinema Grade costs just 69 (approximately 51), but it doesn’t have the shot-matching with groups, or the automatic Log correction and Xrite chart compatibility that you get with the Pro version costing 99 (approx 73) both key features for speeding up video grading. In this spirit we encourage detailed and insightful posts, comments, and discussions on the Cinema Arts. This is a place to learn from and share with professionals. Professionals and amateurs alike unite to discuss the world of filmmaking. r/Filmmakers is a place to meet, share work, tips, tutorials, and experiences in the field. Piracy or advocacy of piracy is not toleratedįollow us on Twitter or join the Reddit Filmmakers Network on Facebook. No Travel Videos or V-Log videos are allowed. Installing and Running Cinema Grade in Davinci Resolve 17.4.4.7 on Windows 10 David Winstead 342 subscribers Subscribe 79 Share 10K views 1 year ago DavinciResolve Windows10 ColorGrading. Please remember that simply posting your film or page for views or subscriptions is not allowed. Final Cut Pro X (FCPX) Cinema Grade or Color Finale 3 Post Moderation Rule for New Boarders New boarders will have their posts moderated - Don't worry if you cannot see your post immediately. 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Rules Apply for your VERIFIED PRO flair and be sure to follow on Twitter. 5/19/2023 0 Comments Login musicconnectIf you find a problem, where you’ve been linked to the wrong Artist, try linking to your iTunes store page instead and try again.Continue to fill out the rest of the page, and you’re done!.Next choose the role that relevant to you You’ll see the choices: Band or Group Member, Solo Artist, Artist Manager or, Label Representative.A drop down menu will appear to enter the name of the artist, or to paste the iTunes Store artist page link.Next, choose the + button next to Artist.On the Apple Music Profile page, it will read, “Click + to request to manage an Apple Music artist account.You will come to the Apple Music for Artist page where you will sign in again by clicking on the “Sign In” button at the top right of the page. Next, you’ll see a page with a series of options to choose from, choose “Artist”. 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Actual range will vary depending on multiple factors, including but not limited to: vehicle model, tire and wheel selection, driving style, traffic conditions, battery charge level when charging begins and outside temperatures. *** - 90 miles per 10 minutes of charging estimated for the 2023 BMW i7 xDrive60, at a 195 kW charging rate. ** - 30 miles per 1 hour of charging estimated for the 2023 BMW i4 eDrive40 at 9.6 kW charging rate. * - Time and range estimates for all BMW all-electric vehicles when charged with a 120V charger. 5/19/2023 0 Comments Xquartz mac el capitanIf you have one of the previous versions of XQuartz that did install in /usr, the symlink /usr/X11 -> /opt/X11 cannot be installed, and some X programs will not start. XQuartz installs into /opt/X11 now, and creates symlinks in /usr. It is recommended to use XQuartz 2.7.9 or later ( ). It is recommened to uninstall it before upgrading to 10.11. Symantec Endpoint Protection is not compatible Outlook users should update at least to 14.5.6 before migrating to OS X 10.11. Outlook 2011 versions below 14.5.6 hang when connecting a mail server. The previous openAFS client does not work under 10.11, it is recommened to uninstall it before upgrading to 10.11.Ī working client is announced on, please read the description carefully before installing the client. I some cases the activation got lost and needed to be restored. In the early days some users reported app crashes when running Office 2016 under OS X 10.11. But at least re-creating a deleted account appears to be much faster than with previous versions of Mail.app. We don't have the impression that the frequency of this is higher than with previous versions of Mail.app.
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The game board comes in three set sizes with a predetermined number of mines: "beginner", "intermediate", and "expert", although a "custom" option is available as well. However, in the event that a game is lost and the player had mistakenly flagged a safe square, that square will either appear with a red X, or else a red X covering the mine (both denoting the square as safe). The game is won once all blank or numbered squares have been uncovered by the player without hitting a mine any remaining mines not identified by flags are automatically flagged by the computer. To help the player avoid hitting a mine, the location of a suspected mine can be marked by flagging it with the right mouse button however, if a player is unsure if a square is safe or not, they can tag it with a question mark (?). Some squares are blank while others contain numbers (from 1 to 8), with each number being the number of mines adjacent to the uncovered square. Clicking on the game board will reveal what is hidden underneath the chosen square or squares (a large number of blank squares may be revealed in one go if they are adjacent to each other). The location of most mines is discovered through a logical process, but some require guessing, usually with a 50-50 chance of being correct. The goal of Minesweeper is to uncover all the squares on a grid that do not contain mines without being "blown up" by clicking on a square with a mine underneath. In Windows 8 and later the game is not included with a fresh Windows install, but Microsoft Studios has published an updated version of it, developed by Arkadium, on Microsoft Store. Microsoft Minesweeper was included without major changes in all subsequent Windows releases until Windows Vista, at which time an updated version by Oberon Media replaced it. First officially released as part of the Microsoft Entertainment Pack 1 in 1990, it was first included in the standard install of Windows 3.1 in 1992, replacing Reversi from Windows 3.0. Microsoft Minesweeper (formerly just Minesweeper, and also known as Flower Field) is a minesweeper-type video game created by Curt Johnson, originally for IBM's OS/2, that was ported to Microsoft Windows by Robert Donner, both Microsoft employees at the time. 5/19/2023 0 Comments Vallum mac writingFor too long LGBT people have been ignored and violence against them has been ignored and they’ve felt that crimes against them will never be taken seriously. “It sends a message, especially to the LGBT community, that the federal government will use this law when they are victims of crime. Shepard’s parents have gone on to become advocates against anti-LGBT violence and discrimination. Matthew Shepard, a 21-year-old gay man of Wyoming, was murdered in 1998 while James Byrd Jr., a 49-year-old African-African man, was also targeted in that year. The repercussions of these crimes led to the passage of the bill in their name. The 2009 Act is named for two prominent victims of notorious hate crimes. He admitted that he would not have killed her if she were not transgender. Vallum had initially claimed he only learned about Williamson’s transgender identity upon commission of the crime, but details emerged that showed more than year since he had dated her, he sought her out upon discovery of the affair by a fellow gang member. For this reason, although Vallum had previously pleaded guilty to the charge of first-degree murder, additional federal charges were brought. Hate crimes prevention act, in the east room, of the white house, october 28, 2009.Īccording to the Justice Department’s Civil Rights Division, Vallum was aware of Williamson’s transgender identity prior to the crime, making him subject to prosecution under the 2009 Matthew Shepard and James Byrd, Jr. , and judy shepard, center, mother of matthew shepard, following his remarks at a reception commemorating the enactment of the matthew shepard and james byrd jr. President barack obama greets louvon harris, left, betty byrd boatner, right, both sisters of james byrd, jr. Joshua Vallum, 27, of Mississippi pleaded guilty Wednesday for the hate crime of the murder of his ex-girlfriend Mercedes Williamson, a transgender teenager. We're here to help! This is simply a reminder of what we are going to look for before responding to the issue.A landmark first prosecution under a federal hate crimes law for the murder of a transgender victim has been successful. 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