Determining a Person’s Power through height/work Power is denoted by the formula‚ P = mgh/t. In lifting a bag‚ work is done. So in order to get power we recorded our weight‚ measured the weight of the bag‚ and the time it took to lift a bag. The experiment is done in two ways 1) with constant time and 2) with constant height. In this way‚ we can compare and know if there will be a difference in the amount of power exerted by a person if either time or height will be constant. The formulated
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Meter Stick Meter Stick Meter Stick The purpose of this experiment is to use the ballistic pendulum to determine the initial velocity of a projectile using conservation of momentum and conservation of energy as well as motion of projectiles. Carbon Paper Meter Stick Ballistic Pendulum In this experiment a steel ball will be shot into the bob of a pendulum and the height‚ h‚ to which the pendulum bob moves‚ as shown
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TUBERCULOSIS Tuberculosis‚ commonly known as TB‚ is a contagious and an often severe airborne disease caused by a bacterial infection. TB typically affects the lungs‚ but it also may affect any other organ of the body. It is usually treated with a regimen of drugs taken for 6 months to 2 years‚ depending on the type of infection Tuberculosis was popularly known as consumption for a long time. Scientists know it as an infection caused by M. tuberculosis. In 1882‚ the microbiologist Robert Koch discovered
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1. The first electronic digital computer (called ENIAC - the Electronic Numerical Integrator and Calculator) was developed in 1946 and contained over 18‚000 vacuum tubes. | 2. The leg muscles of a locust are about 1000 times more powerful than an equal weight of human muscle. | 3. The cosmos contains approximately 50‚000‚000‚000 galaxies. | 4. There are between 100‚000‚000‚000 and 1‚000‚000‚000‚000 stars in a normal galaxy. | 5. Sound travels about 4 times faster in water than
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Name __________________________________ Electric Fields Go to HYPERLINK "http://phet.colorado.edu/simulations/sims.php?sim=Electric_Field_Hockey" http://phet.colorado.edu/simulations/sims.php?sim=Electric_Field_Hockey and click on Run Now. 1. You rub balloons in your hair and then hang them like in the picture below. Explain why you think they move apart and what might affect how far apart they get. When the balloons are rubbing together they are taking charges(electrons ) from
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Fawzi Abdelgani Ahmad . Experiment 1: Experimental Uncertainty (Error) and Data Analysis Jan/30/2013 PRELAB: 1. Do experimental measurements give the rule value of a physical quantity? Explain. No. Statistical methods are used to establish the deviations in the measurement. 2. Distinguish between random (statistical) error and systematic error‚ and give an example of each. Random errors are caused by unknown and unpredictable changes in the experiment like mechanical
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To determine the heating and cooling curve of water Design: What we are going to do is investigate the phase changes and what the heating curve of water is. We are going to do this is by heating up 100ml of water on a Bunsen burner then adding ice cubes. Use a thermometer to measure the temperature every 30 seconds until it reaches a plateau. Hypothesis: As more time passes‚ the temperature of the water increases. Independent variable: Time Dependent variable: Changing water temperature
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6. Applications * Is it possible to add heat to a body without changing its temperature? Yes. It is possible to add energy to a body (in the form of heat) and not raise its temperature by causing a phase change. When you heat ice it takes energy to convert it from ice to water‚ but does not change the temperature of the body until it is all converted. The principle behind this is what we call latent heat. It refers to the energy (or heat) required to change the state of a substance without changing
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PHYSICS science that deals with matter‚ energy‚ motion and force. BRANCHES OF PHYSICS Acoustics studies the production and properties of sound. Atomic physics examines the structure‚ properties‚ and behavior of the atom. Biophysics applies the tools and techniques of physics to the study of living things and the life processes. Cryogenics is the study of extremely low temperatures. Electrodynamics analyses the relationship between electrical and magnetic forces. Fluid physics deals with
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Elastic Collision between carts of equal mass: Collision 1 Mass (kg) Initial Velocity (m/s) Final Velocity (m/s) Momentum Initial (kg*m/s) Momentum Final (kg*m/s) Red Cart 2.0 + 50.0 0 0 0 Blue Cart 2.0 - 50.0 0 0 0 Elastic Collision between carts of unequal mass: Collision 2 Mass (kg) Initial Velocity (m/s) Final Velocity (m/s) Momentum Initial (kg*m/s) Momentum Final (kg*m/s) Red Cart 1.0 + 50.0 -33.33 50 -33.33 Blue Cart 2.0 - 50.0 66.66
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