changes to their marine environment‚ sometimes showing biological symptoms in response to toxicity exposure. (1). In this experiment‚ three Daphnia magna were treated with three different drugs to measure the change in their short-term cardiac function; ethanol‚ caffeine and nicotine. Ethanol‚ found in drinking alcohol is a
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F = m(2r ‚ where ω is the angular velocity of the circular motion. The centripetal force is provided by the tension of the string. The string will always make an angle( to the horizontal instead of lying on the plane of the horizontal circle described by the mass m. Thus‚ the centripetal force is given by the horizontal component of the tension. It is shown that the tension T = m(2L regardless of the angle(. Procedure 1. Measure the mass m of the rubber bung by the triple beam balance. 2
Free Force Mass Measurement
have happened. A premature experiment by Bartlett
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TOPIC: Spring Mass Oscillator OBJECTIVE: To determine the spring constant (K)‚ using mass system. APPARATUS: STEEL RULE SPRING STOP WATCH TAPE MEASURE SLOTTED MASS THEORY: In classical mechanics‚ a harmonic oscillator is a system which ‚ when displaced from its equilibrium position‚ experience a restoring force‚ F‚ proportional to the displacement‚ X‚ according to Hooke’s Law; F = – KX = mα …………………………………. Where‚
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Introduction Milgram Experiment Method 40 men were recruited for a lab experiment investigating “learning”. In exchange for their participation‚ each person was paid $4.50. After the WWII‚ Stanley Milgram a psychologist of Yale University posed a question‚ “Could it be that Eichmann and his million accomplices in the Holocaust were just following orders? Could we call them all accomplices? These men were introduced to another participant who were actually actors. These men were given role
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K562 or Jurkat cell line is more sensitive to this targeted extract? 4-METHODOLOGY 4-1 Study design The design of our study is a type of case-control design‚ where the induction of apoptosis on both the myeloid (K562) and lymphoid (Jurkat) human cell lines by kola nut extract will be investigated. The design of the experiment will include a control group of cells (untreated and treated with only solvent that is used in the extraction
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THE EFFECT OF CHANGE IN pH ON THE ACTIVITY OF ENZYMES Introduction: Enzymes are catalysts that speed up‚ and control chemical reactions within a cell and break down complex molecules into smaller ones. Some of the chemical reactions that take place in the body produce toxic by-products which need to be converted. The liver produces hydrogen peroxide‚ which is extremely poisonous. When the catalase comes in contact with the hydrogen peroxide‚ it is broken down into water and oxygen. Aim:
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Eating Chocolate Helps Students Become Happier Henry Vuong Dennis Lin Stella Zhang Introduction: Our experiment is based on a former experiment described in the article A Scientific Experiment‚ In Search of Chocolate Happiness. It was an experiment in a mall Cafe called Butler Chocolate‚ with a purpose of finding a way to help shoppers become happier. By giving each customer a piece of Butler ’s chocolate‚ the Cafe hoped to increase the number of smiling faces at the mall. Early findings
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better judgment; whether under the direct authority or not. The objective of the experiment was to gauge how individuals respond to having the authority and carrying out duties per their job requirements‚ regardless if it affects their morals or way of life. Stanley‚ the culmination of his experiment people abide by and be in agreement out of fear when they under pressure. The accomplishment in conducting the experiment was determined by category. For example‚ category one was to determine who was
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substrates used to generate energy in respiration where it is needed. A drug that increases heart rate is called a positive chronotrope‚ and this is demonstrated in this experiment when adrenaline is used to increase heart rate in Daphnia. One of the ways adrenaline increases heart rate is through the action of what is known as a ’second messenger ’ or ’transduction component ’‚ in this case it is a chemical made in the cell known as cyclic adenosine monophosphate (cAMP). Transduction is the process
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