The purpose of this practical is to investigate how the pulse rate of humans changes when they exercise. Someone who is physically fit can supply their muscles with enough blood‚ carrying glucose and oxygen‚ for an activity at a lower heart and breathing rate. The fitter you are the lower your resting heart rate. You and your classmates will be the humans investigated. SAFETY: If you know you have any condition that affects you doing exercise‚ please make sure your teacher knows before you start
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experiment is to determine the rate law and the activation energy for the reaction between persulfate ion‚ S2O82-‚ and iodide ion‚ I-: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) The rate law can be written as Reaction rate = (1) Where m and n are the orders with respect to S2O82- and I-‚ respectively‚ and k is the rate constant. Determining the rate law involves determining the values of m and n. The temperature dependence of the rate constant is given by (2)
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What can we say about the price elasticity of demand for nicotine products (such as cigarettes‚ pipes‚ tobacco) in the group of nicotine addicted users‚ versus the group of "social smokers"? Price elasticity of demand is defined as the percentage change in quantity demanded divided by the percentage change in price. (Douglas‚ E.‚ (2012) sec. 4.2) The price elasticity of demand is the same for addicted users and social smokers. Smoking is an expensive habit. In Mississippi where I live tax on a
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The discount rate Main article: Discount rate The rate used to discount future cash flows to their present values is a key variable of this process. A firm’s weighted average cost of capital (after tax) is often used‚ but many people believe that it is appropriate to use higher discount rates to adjust for risk or other factors. A variable discount rate with higher rates applied to cash flows occurring further along the time span might be used to reflect the yield curve premium for long-term
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Mortality rate is a measure of the number of deaths (in general‚ or due to a specific cause) in a population‚ scaled to the size of that population‚ per unit of time. Mortality rate is typically expressed in units of deaths per 1000 individuals per year; thus‚ a mortality rate of 9.5 (out of 1000) in a population of 1‚000 would mean 9.5 deaths per year in that entire population‚ or 0.95% out of the total. It is distinct from morbidity rate‚ which refers to the number of individuals in poor health
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Resting metabolic rate can vary with age independently from body mass changes in the Colorado potato beetle‚ Leptinotarsa decemlineata. Abstract A study was done by Saija Pironine‚ leena Lindstrom‚ and Anne Lyytinen in the Journal of Insect Physiology‚ to investigate the age dependence of resting metabolic rate in Colorado potato beetle (Leptinotarsadecemlineata) from adult emergence until age 10 days. In their hypothesis they expected to see a bell shaped pattern in metabolic rate with adult age
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minutes 30 50 minutes 10 15 minutes Weightage by content Unit No 1 2 3 4 6 7 8 9 10 3. 6 6 10 10 Mark Unit Sub-Units Introduction Consumer Equilibrium and Demand Producer Behaviour and Supply Forms of Market and Price determination National income and related aggregates Money and Banking Determination of Income and employment Government Budget and the economy Balance of Payment Total Marks 4 18 18 10 15 8 12 8 7 100 Difficulty level of the
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Posture | Time (Minutes) | Pulse Rate(Beats/30 seconds) | Pulse Rate x2(Beats/minute) | Lying Down | 1 | 24 | 48 | Standing Up | 1 | 30 | 60 | Pulse Rate after 15 seconds of exercise (Beats/15 seconds) | Pulse Rate x6 in order to measure beats/minute(Beats/minute) | 11 | 66 | 3. Record how long this takes in seconds. - 38 seconds 4. Calculate the increase in the pulse rate immediately after the 15 seconds exercise compared with your standing rate. 66-60= 6. 6 pulses increased
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Chemical Kinetics Factors Affecting Reaction Rate OVERVIEW Chemical reactions occur at different rates. In this experiment you will consider some of the key factors that influence the rate of a reaction: nature of reactants - particle size temperature concentration catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However‚ in order for the
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Election Day. That is where interest groups come in. Interest groups‚ also known as pressure groups‚ lobby groups‚ campaign groups‚ advocacy groups or special interest groups‚ are voluntary organization with the common goal of influencing public policy to change to benefit the common goal or cause of said interest group. Interest groups will often try to influence peoples in legislative bodies to support the goal of the interest group‚ ultimately leading to more
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