why are reaction times different
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Reaction Time Differences in Men and Women Reaction Time Differences in Men and Women. Men have an unfair advantage over women because of their strength and size. That’s why the events are separated by gender, and Para-Olympians have their own games. Because of this, we have the women’s throwing events using lighter implements.
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- Different reactions can happen at different rates. Reactions that happen slowly have a low rate of reaction. Reactions that happen quickly have a high rate of reaction. For example, the chemical weathering of rocks is a very slow reaction: it has a low rate of reaction.Explosions are very fast reactions: they have a high rate of reaction.he rate of a reaction can be measured by the rate at which a reactant [reactant: Substances present at the start of a chemical reaction ] is used up, or the rate at which a product product: A product is a substance formed in a chemical reaction. is formed.
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Reaction Time Reaction Time. Reaction time is the interval time between the presentation of a stimulus and the initiation of the muscular response to that stimulus. A primary factor affecting a response is the number of possible stimuli, each requiring their own response, that are presented.
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- A: Chemical reactions occur because different types of molecules interact with each other to create new substances. Many of these interactions happen naturally and are not man-made. When one molecule interacts with another one, a chemical reaction occurs due to the breaking of old bonds and the forming of new ones. Continue Reading
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Reaction Time Differences in Men and Women More articles on reaction time and the false start rule: 1  Changing the IAAF Reaction Time Rule (Part 2) 2  Armin Hary and the IAAF Reaction Time Rule (Part 1) 3  Reaction Time, Usain Bolt and the Pareto 80-20 Rule. 4  How to Improve your Reaction Time.
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Definitions &Translations Suggested Resources (0.00 / 0 votes) Rate this definition: starlet. Song lyrics by starlet-- Explore a large variety of song lyrics performed by starlet on the Lyrics.com website.
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- 1 This is due to an increase in the number of particles that have the minimum energy required. The reaction rate decreases with a decrease in temperature.  Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction.
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Identifying Action and Reaction Force Pairs Different Objects Only. In each of these cases, the action is the force exerted by the first object on the second, and the reaction force is the force exerted on the first object by the second. The important thing to notice is that action and reaction forces act on different objects in the interaction. Two equal and opposite forces acting on the same object do not make an action-reaction pair! This is why the two opposing forces don't cancel out.
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Rate of Reaction Rate of Reaction. The rate of a reaction is the speed at which a chemical reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands, of years while others can happen in less than one second.
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Biology for Kids 1 pH-In many cases the pH level, or acidity, of the environment around the enzyme and substrate can affect the reaction rate. 2  An extreme pH (high or low) will typically slow the reaction or even stop the reaction altogether. 3  Concentration-A higher concentration of substrate or enzyme can increase the reaction rate.
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Half-life 1 For this example, the term half time might be used instead of half life, but they mean the same thing.  In a first-order chemical reaction, the half-life of the reactant is ln(2)/λ, where λ is the reaction rate constant.
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- The instantaneous rate of reaction at any moment in time can be calculated from a graph of the concentration of the reactant (or product) versus time. The graph below shows how the rate of reaction for the decomposition of phenolphthalein can be calculated from a graph of concentration versus time. The rate of reaction at any moment in time is equal to the slope of a tangent drawn to this curve at that moment.
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Why do chemical reactions occur more slowly at low temperatures? Chemical reactions occur when a particular part of one element or molecule meets a particular part of another element or molecule.The reaction works similar to putting a key in a lock. elements and molecules move much faster at high temperatures than they do at slower temperatures.When they move faster, they bounce into each other many more times. Thus, they have many more opportunities to hit the spot where the chemical reaction will occur.lements and molecules move much faster at high temperatures than they do at slower temperatures. When they move faster, they bounce into each other many more times. Thus, they have many more opportunities to hit the spot where the chemical reaction will occur.
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Reaction Time Terms/Concepts: reaction time: the time between a stimulus and a response stimulus: something that causes an action or response response: a reaction to a stimuli sensory receptors: parts of your body that respond to stimuli; Reaction time is the length of time it takes to respond to a stimulus. Reaction time is important when driving, when playing sports, in emergency situations, and in many day-to-day activities. Reaction time depends on nerve connections and signal pathways. Reaction time is the measurement of how long it takes for brain and nerves to react to a stimulus. Materials: 10 boys and 10 girls between the ages of 10 and 12
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Scientific ResearchAn Academic PublisherOPEN ACCESSHome Articles Journals Conferences Books News About Submit Conclusion: This shows that the auditory reaction time is faster than the visual reaction time. And also males have faster reaction times when compared to females for both auditory as well as visual stimuli.
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Factors that Affect the Chemical Reaction Rate For solids, the shape and size of the reactants makes a big difference in the reaction rate. Presence of Catalysts and Competitors. Catalysts (e.g., enzymes) lower the activation energy of a chemical reaction and increase the rate of a chemical reaction without being consumed in the process.
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Effect of temperature on enzyme activity This has several effects on the rates of reactions. 1) More energetic collisions. When molecules collide, the kinetic energy of the molecules can be converted into chemical potential energy of the molecules. If the chemical potential energy of the molecules become great enough, the activation energy of a exergonic reaction can be achieved and a change in chemical state will result.
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- No, an increase in temperature will speed up the reaction. This is because the heat energy is transferred into kinetic energy (movement energy) in the reactors and this increa … ses their speed and so increases the rate at which they collide with each other, increasing the rate of the chemical reaction.aking the world better, one answer at a time. the increase of temperetare increases the rate of chemical reactions when its endorthemic reactions but exorthemic reaction lead to backward reaction.
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Current Top 10 See the full leaderboard The average (median) reaction time is 215 milliseconds, according to the data collected so far. In addition to measuring your reaction time, this test is affected by the latency of your computer and monitor.
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Reactions Rates-Chemistry why is an activated complex sometimes called the transition state. there is a brief existence that ends with the reformation of the reactants or with the formation of products. changes in the rate of chemical reactions depend on conditions such as. temperature, concentration, surface area, catalyst. the main effect of increasing the temperature of a chemical reaction is to ___ the number of particles that have enough kinetic energy to react when they collide.
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What is difference between endothermic and exothermic reaction if both require activation energy? So, if reactants have a higher potential energy than products, the overall reaction releases energy, hence it's an exothermic reaction. If products have a higher potential energy than reactants, the overall reaction absorbs energy, hence it's an endothermic reaction. The activation energy is sort of like a barrier. Each reactant molecule has to go over that barrier for the reaction to proceed.
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What Factors Affect Reaction Time? Much experimentation in reaction time studies human response to traffic and other rapidly changing situations. In those cases, subjects must first prove that they can perceive a stimulus and then react to it. A subject receives a rating according to his raw reaction times factored against a base state calculated from preparation for testing, life experience, age, physical fitness and state of attention.
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Experiment: How Fast Your Brain Reacts To Stimuli Slow reaction times may come with consequences. Reaction time is a measure of the quickness an organism responds to some sort of stimulus. You also have “reflexes” too. Reflexes and reactions, while seeming similar, are quite different. Reflexes are involuntary, used to protect the body, and are faster than a reaction. Reflexes are usually a negative feedback loop and act to help return the body to its normal functioning stability, or homeostasis. The classic example of a reflex is one you have seen at your doctor’s office: the patellar reflex.
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Factors that Affect the Chemical Reaction Rate The rate of a chemical reaction depends on the medium in which the reaction occurs. It may make a difference whether a medium is aqueous or organic; polar or nonpolar; or liquid, solid, or gaseous. Reactions involving liquids and especially solids depend on the available surface area.
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- You may notice a striking similarity between proffer and offer. Are the two words connected by etymology? Yes, indeed. Proffer comes from Anglo-French profrer, which itself is an alteration of the earlier porofrir. That word in turn combines por- (which means forth and is related to our pro-) and offrir (which means to offer and is an ancestor of our word offer). Proffer entered English in the 14th century.
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Beard's Reaction Time Clinic Since there is a half-second (or .500 seconds) delay until the green light comes on, a .500 reaction time is perfect. (In the same way, the four tenths delay of the Pro Tree makes a .400 a perfect light on that one) Now, the reaction timer stops when the car leaves the starting line.