They are listed as a stopwatch, time study board, time study form and a pocket calculator. Videotape equipment is also useful if available (Niebel & Freivalds, 2014, p. 418). Stopwatches The time study equipment available for use today has progressed with the technological advances made in the last fifty years. However, the stopwatch remains the most widely recognized symbol in the field of time studies. Thomas proclaims that “The work measurement symbol remains the stopwatch, but today’s sophisticated
Actually Antonino and Marcell had a much bigger goal in mind: they had heard about The Stopwatch Gang: a small gang of transplanted Canadians (Paddy Mitchell, Lionel Wright and Stephen Reid) and who had made a very good living robbing banks in the west of United States and Canada. They had robbed an estimated 100 plus banks and had gotten >$15 million (in 1980 US dollars) and the brothers wanted to do better than they had done and wanted to do it all at home verses having to go south of the border
containers used. • Volume of the iron ball used. • Reliability of the thermometer used in the trials. • Volume of the container used. • Settings used on and the reliability of the stopwatch. Controlling variables: The thermometer, containers, and iron ball were secured of any possible contaminants. The stopwatch was calibrated and checked to be correctly measuring the time in seconds and milliseconds, by comparison with other stopwatches. The thermometer was checked to be accurately measuring
the cones dropped from the two meter mark of the measuring tape. The cones should be dropped facing downwards with the rim level with the two meter mark. When the cone is dropped a stopwatch will be started, the stopwatch is started by the same person who drops the cone to achieve maximum accuracy, the stopwatch is stopped the moment any part of the cone touches the ground. If the cone hits the wall or any other object on its way down, the measurement will be considered void, and that one
protractor and align it with the middle of the sticking out portion of the pendulum. Pull the string and align it with 15 degrees. Set the stopwatch to one minute. Don't start it yet. Simultaneously start the stopwatch as soon as the string is released. Begin counting the swings of the pendulum. Once the stopwatch hits one minute stop counting and turn off the stopwatch. Record the swings in a minute. Repeat steps 3-11 four more times. Calculate all trials using the average formula to find their averages
The Effect of Temperature on an Enzyme's Ability to Break Down Fat Aim: To investigate the effect of temperature on an enzyme’s (lipase) ability to break down fat. Hypothesis: The graph below shows the rate increasing as the enzymes get closer to their optimum temperature (around 35 degrees Celsius) from room temperature. The enzyme particles are moving quicker because the temperature increases so more collisions and reactions occur between the enzymes and the substrate molecules
zero. 4. Measure out 0.5g of Iron Filings on to the filter paper by reading the scales. 5. Pour the Iron Filings into the beaker whilst simultaneously starting the stopwatch. 6. Whilst the stopwatch is running, fold the filter paper so that it fits into the filter funnel. 7. When 3 minutes has gone, stop the stopwatch and pour all of the Iron Filings into the filter funnel and allow to filter. 8. When the Copper Sulphate has filtered out, take out the filter paper and allow it to
matching the downward force. Falling Masses -------------- [IMAGE] Method ====== In this experiment we are going to drop a paper cone with different sized weights in it from a height. Using a stopwatch we will time how long it takes for the cone to reach the floor. A stopwatch is used because it is very precise to the nearest 1000th of a second whereas a
Materials : Manilla card of different size (25.00cm², 100.00cm², 225.00cm² 400.00cm², 625.00 cm², 900.00cm²) , stopwatch (±0.01s), metre rule (±0.05m) Method : A manila card is cut into several squares with 5cm, 10cm, 15cm, 20cm, 25cm and 30 cm sides respectively. The square manila card is dropped from a 1 m height in a closed room. The falling time of the manila card is measured using stopwatch. The time is recorded. The experiment is repeated three times. EXPERIMENT II – Varying the shape of the
equal concentrations. Apparatus * Four test tubes * Test tube rack * Four pieces of raw potato that are of the same mass and measurement * Water * Three different concentrations of salt in the different solutions of water * Stopwatch * Paper towel * Four students Method We are grouped in fours and will each take responsibility for their piece of raw potato. They will be cut to the exact same size. They will then be rolled in the paper towel so that any excess
pour them out all over the work bench. Method: Place all of the following onto your work bench: 5 different sized circumference ball bearings inside 1 plastic container (so they do not roll all over the bench, onto the floor or down the sink), a stopwatch, 15cm string, a black texta and an electronic balance. Lean the 2.17 m v-ramp on the side of the bench on a diagonal so the other end is being blocked by something sturdy such as a wall or side of another bench. Place the container onto the scales
beater, an 8” flat frying pan, a cooking stove, and a kitchen stopwatch. The experimenter cracked an egg into a clean bowl and added 1/10 spoon of salt to the bowl. The experimenter used the egg beater at the lowest setting to stir the egg until it became a pale yellow and homogeneous fluid. The experimenter then added water into the well stirred egg. The volume of water was about 1/6 of the volume of the beaten egg. Starting the stopwatch, the experimenter used the egg beater to stir the mixture of
higher than 20% to extend the graph so that the maximum possible rate of reaction could be reached. The problem of the delay between pouring in the Hydrogen Peroxide, bunging the test tube and starting the stopwatch could have been limited by getting another person to start the stopwatch when the hydrogen peroxide was poured into the tube. Other Biology Projects
I am to investigate the factors that affect the rate at which Sodium Thiosulfate (Na2S2O3) reacts with Hydrochloric Acid (HCl). When sodium thiosulfate is mixed with hydrochloric acid, a reaction takes place, leading to a precipitate of sulphur being formed. This turns the solution cloudy. I shall use this clouding to investigate a factor that affects the rate of reaction, the factor being temperature. To do this, I shall react Sodium Thiosulfate with Hydrochloric Acid at a range of
Question/Purpose : The purpose of this lab was to learn how construct and analyze graphs by figuring out the speed of the buggy car. The question was simple: did the buggy car maintain a constant speed throughout its movement. We will be changing the distance the car has to move and will be recording how long the car takes to move that distance. Therefore, distance is the independent variable while the time would be the dependant variable. Procedure : We decided to answer the question by having the
Research Question: How does the side lengths of a square parachute canopy affect the drop time of the parachute from a 460 cm drop height? The side lengths of the square parachute canopy will be 30 cm, 35 cm, 40 cm, 45 cm, 50 cm. The dependent variable would be the drop time of the parachute released from 460 cm(the drop time is determined by the time it takes for the parachute to touch the ground safely and softly from the release point). The dependent variable will be measured in seconds. Note:
hydrochloric acid. 3) Add 20ml³ of sodium thiosulphate into another flask and heat to specific temperatures with the Bunsen burner (and using a thermometer). 4) Once it is at the correct temperature, add it to the hydrochloric acid and start the stopwatch.
The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid I predict that as the temperature is increased the rate of reaction will increase. This means that the graph drawn up in my analysis will have positive link so it will look something like shown below, and will probably be curved as the increase in rate of reaction will not be exactly the same as the temperature is increased so the graph will look something like this. [IMAGE] This can
of string, the shorter the time it takes for the pendulum to complete one period. The longer the length of the string, the longer the time it will take to complete one period. Equipment needed for experiment: -Clamp -Stopwatch -Bob/Ball -Metre ruler -String Obtaining the results: I will be measuring the length of the string in 10s, so that I can obtain a wider range of results. I will then take 10 readings, and calculate the average
...sed, the stopwatch has to be reset and both classmates have to prepare for the next trial. These may only cost a few seconds but during these few second (time gap) the stem of the hydrilla has continued to release bubbles which we haven’t counted them which can affect the data because fewer bubbles were counted. We can improve next time by asking more people to help us with the timing. For example, after 1 minute when the 1st trial finishes, one student stops his/her stopwatch and simultaneously