Friction

occurs because of the thick slippery layer breaking the contact between the wheel and ground. The tire has no more grip to the ground and slips and spins on the slippery layer instead, unable to be controlled by the steering wheel. The coefficient of friction that occurs during hydroplaning is low because the tire cannot stop or go on the surface due to the water layer. The other factor he tread pattern on the tire, the adhesive qualities would decrease abruptly. Rubber treads are not only…

interface is similar to iPhone’s slide to unlock; however, how hard the user press at the beginning of the sliding gesture will trigger different actions. The haptic feedbacks of the two slide gestures are also different: shallow slide provides lower friction, and deep slide provides higher…

The maximum speed for vehicles travelling on Australian highways is currently 110km/h. It is argued that this speed is too slow for a highway and may cause more road accidents and increase the road toll due to the drivers being restricted by the speed limit. When the speed limit is slow, drivers are left dangerously stuck behind and in-between trucks. The drivers are also too frustrated about not going above the low speed limit which can act as a distraction. (Tucker, 2015) Therefore, the…

have worki = workii = workiii = F *s. 18. B Why: to determine negative or positive work sliding friction does, we first need to figure out the angle between direction of sliding friction and direction of its displacement. If the angle is greater than 90o, sliding friction does negative work. If the angle is equal to 90o, sliding friction does not do work. If the angle is less than 90o, sliding friction does positive work. 19.…

Athletes are constantly being asked which they prefer: artificial turf or natural grass. They want the ideal playing surface to compete on, which was the logic behind inventing artificial grass, but what people don’t know are the disadvantages that are associated with artificial grass. After researching the downsides to turf, I read about a study that states that seventy-one percent of injuries on turf are traumatic injuries and the other 29% are for overuse injuries. This includes both…

whether an injustice exists” (King). Thoreau’s critique of an unjust government relates to Kings first step. Thoreau believed that every machine had friction, yet “when the friction comes to have its machine…let us not have such a machine any longer” (Thoreau). In the case of civil rights, the government has the friction of racial inequalities. That friction had several machines which enables whites to conquer over African Americans. King’s second step was “negation”…

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4. Results and discussion 4.1 Material removal rate The material removed from each coupon was determined by measuring its mass before and after electro-polishing. Theoretical values were then obtained using Faraday’s laws of electrolysis as shown in Equation 9. (9) Where m is the mass of material removed in grams, I is the current and t is the electro-polishing time. EW is the equivalent weight which depends on the chemical composition of…

Any spin they choose to give the ball, whether topspin or backspin, will be created by the friction force of the racket’s strings on the ball. The longer the ball is in contact with the racket the greater the spin. This happens because the friction force is applied for a longer amount of time. When someone tries to hit a tennis ball with a lot of speed there is a small “acceptance window”. The acceptance window is a…

kiss him again is bit back, hands instead finding their way to rudi’s hips. what’s his game now ? it could be nothing, or it could be everything. this is just the type of closeness he enjoys. mingled breathes and lips so close. he’s drunk on the friction in the air. tyler pulls his body closer, straightening himself up in order to reach. image lips pick up where they left off wordlessly as the grip against the ghoul’s body tightens. he might be the one trapped, but he can push back. guide him…