Experiment 3: Oscillators and timers Introduction The NE555 chip which operates at 5v‚ utilizes two comparators for temperature stability. This chip is capable of producing oscillations. It is made up of 8 pins and its oscillation mode is controlled by two resistors and a capacitor. Each pin is set to perform a function. Pin 1 serves as ground. Pin 2 is the trigger - the input to the lower comparator which sets the latch that causes output to go high. Pin 3 serves as the output.
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Human Due Diligence “The success of most acquisitions hinges not on dollars but on people” (Harding‚ Rouse‚ 2007). It is often said that people are the most significant and important resource of any organization‚ yet due diligence sometimes focuses on the corporate‚ financial‚ and legal dimensions of the deal while ignoring the people issues. Financial motivation are only a small part of the picture in most mergers‚ while success and failure of consolidations are profoundly connected to people
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Physics 1003 Experiment Report In this experiment‚ the technician began with the demonstration of solar energy. Solar energy is the conversion of light energy to electrical energy by using solar panels. Solar panels are devices that contained solar module which use light energy from light to generate electricity through the photovoltaic effect. And photovoltaic modules generate electricity from a frequency of light. From my observation of the experiment‚ I found that the panel is black in
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The milgram experiment. The three people involved were: the one running the experiment‚ the subject of the experiment a volunteer‚ and a person pretending to be a volunteer. These three persons fill three distinct roles: the Experimenter an authoritative role‚ the Teacher a role intended to obey the orders of the Experimenter‚ and the Learner the recipient of stimulus from the Teacher. The subject and the actor both drew slips of paper to determine their roles‚ but unknown to the subject‚ both slips
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REPORT2013JAN-PHISICS Group: LUCA Does mass/weight affect acceleration? Hypothesis: The heavier the car the slower ( the more the mass the slower)‚ the more weight(force) we added the faster. Experiment: Materials: Trolley Elastic cords for accelerating trolley Rod for attaching elastic cord to trolley Ticker-timer with power supply unit Ticker-tape Sellotape Process: 1.Thread a length of ticker-tape through a ticker-timer and attach the end to a trolley. 2.Pull a trolley with a fixed
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This part of the experiment yielded an exothermic reaction. The purpose was to calculate the specific heat capacity and molar mass of the zinc metal. The specific heat capacity was found to be 0.197 J/g °C with a percent error of -49.5%. The molar mass was found to be 127 g/mol with a percent error of 94.2%. Possible sources of error inherent to this segment of the experiment were the fact that when the temperature of the solution was being measured
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Kinematics / Projectiles x =?vt ?v = (v + vo)/2 v = vo + at x = vot + ½at2 v2 = vo2 + 2ax y =?vt ?v ’ ½(vo + v) v = vo – gt y = vot – ½gt2 v2= vo2 – 2gy R = (v02/g)sin(2θ) Forces Fnet = ma Fgravity = mg Ffriction ≤ μsN Ffriction = μkN Circular Motion Fnet = mv2/r ac = v2/r v = 2πr/T f = 1/T T = 1/f Gravitation F = GM1M2/R2 g = GM/R2 T2/R3 = 4π2/GM = constant GM = Rv2 Energy W = Fdcosθ KE
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Helicopter Experiment Prediction: As the mass on the helicopter’s copters increases‚ the speed taken for the rotors to spin down faster‚ this is because there will be more downward pull from gravity‚ as the terminal velocity for a paper helicopter is low. Variables: Independent variable will be the mass that we change throughout the experiment. The dependant variable will be the time that we measure for the helicopter to reach the floor. Finally the controlled variables include‚ the helicopter
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Misconceptions of Physics One of the misconceptions in physics is about Newtons laws. It says that friction can’t act in the direction of motion. This is wrong because friction can act in the same direction as motion simply because a car on a road is traveling in one direction. The friction on the tires causes it to slow down over a distance along with some air resistance. This proves that friction can act in the same direction as motion A misconception in physics is that the moon is not in
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physics paper work Physics - the study of matter‚ energy and their interactions – is an international enterprise‚ which plays a key role in the future progress of humankind. The support of physics education and research in all countries is important because: physics is and exciting intellectual adventure that inspires young people and expands the frontiers of our knowledge about nature. Physics is the most basic of the physical sciences. From chemistry and geology through to biology and cosmology
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