Once the housings were built, hydraluc cyliders were attached to exert force on the test engines, and now NASA will crush, pull, push and twist the Space Launch System until it breaks, using millions of pounds of force.
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We leaned further and further back, allowing the weight of our bodies to exert force on the noodles, giving little thought to what would happen if they did indeed snap and one of us went rolling down the mountainside, hitting purple banana trees on the way.
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A line wiper operates in much the same way as a pack-off sub, except that the rubber element is much softer. Hydraulic pumps exert force on the rubber element until a light pressure is exerted on the wireline, cleaning grease and well fluid off the line in the process.
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The shoulders should be positioned so that they are directly over or slightly forward of the bar. The bar is gripped with a very wide grip. The neck should be positioned in line with the torso or slightly more vertical. During the first pull, the lifter begins to exert force on the bar, separating the weight from the platform.
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The long wake testifies to the strong interaction between the atmosphere and ocean, which has strong implications for global climate research. It is also important for understanding natural climate variations, like El Niño. There are number of reasons why this has been observed only in Hawai‘i. First, the ocean reacts slowly to fast-changing winds; winds must be steady to exert force on the ocean, such as the trade winds.
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Contrary to popular misconception, the electrical deflection of a stream of water from a charged object is not based on polarity. The deflection occurs because of electrically charged droplets in the stream, which the charged object induces. A stream of water can also be deflected in a uniform electrical field, which cannot exert force on polar molecules. Additionally, after a stream of water is grounded, it can no longer be deflected.
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The Hawaiian sling has some similarities to spearguns and polespears, in that all are powered by energy stored in rubber tubing. However, it occupies a middle ground between the two; the sling is somewhat more powerful than a polespear and offers a much more comfortable grip, but is less powerful than most spear guns. Like a pole spear, the diver must exert force on the shaft to keep it from releasing, whereas a spear gun has a trigger mechanism to accomplish this. The modern Hawaiian sling was popularised in the mid 1950s; however, fishing slings are mentioned in anthropological journals as early as 1917.
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The propellant gases continue to exert force on the bullet and firearm for a short while after the bullet leaves the barrel. One of the essential elements of accurizing a firearm is to make sure that this force does not disrupt the bullet from its path. The worst case is a muzzle or muzzle device such as a flash-hider that is cut at a non-square angle, so that one side of the bullet leaves the barrel early; this will cause the gas to escape in an asymmetric pattern, and will push the bullet away from that side, causing shots to form a "string", where the shots cluster along a line rather than forming a normal Gaussian pattern. Most firearms have muzzle velocities in excess of the ambient speed of sound, and even in subsonic cartridges the escaping gases will exceed the speed of sound, forming a shock wave.
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The deltoid muscle is usually innervated by the fifth and sixth cervical nerve roots and is therefore often functional in patients with tetraplegia, though the triceps muscle, which is innervated by the seventh cervical root, is paralysed. Because of the location at the back of the arm, the posterior part of the deltoid muscle can give strength in the same direction as the triceps muscle and is therefore theoretically a good donor to regain elbow extension. Not only the direction of the strength provided by the donormuscle is important, Smith et al. showed that the matching between the original functional properties of the donor and recipient muscles affects the outcome of the transfer.Principles of tendon transfers to the hand; Smith RJ, Hastings H, AAOS Instructional Course Lectures 1993;21:129– 149How musculotendon architecture and joint geometry affect the capacity of muscle to move and exert force on objects: a review with application to arm and forearm tendon transfer design; Zajac FE, J Hand Surg 1992;17A:799–804.
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