The problem I am attempting to solve in my experiment is how does the cross sectional area of a skier affect their final velocity. This topic is of interest to me because I would like to know if training in less layers makes a large impact on your speed and tempo. I hypothesize that if the skier is wearing more layers(has a higher cross sectional area), their final velocity will be lower and vise versa. This is because there is more air resistance when the cross sectional area is greater.
In this experiment, I skied down a slope without turning and measured my final velocity at the end of the slope. The independent variable in this experiment was my cross sectional area and the dependent variable was the final velocity at the end of the slope.
Varying the surface area A larger surface area will result in the number of particles to increase so there will be a higher chance of a collision increasing the rate of reaction , so the reactant broke into smaller pieces would react faster oppose to larger pieces. Varying the temperature An increased temperature will increase the speed of the particle
Dependent variable: We are measuring the time taken for the pink indicator to turn clear when hydrochloric acid is added to it. Independent variable: We are changing the molar of hydrochloric acid we are adding to the gelatine cubes. The molars range from 1-3.
The independent variable within the experiment was the presence of pollution content such as pH, dissolved oxygen, nitrate and phosphate level. This was varied by locating two areas, one with + %(have to include 5) polluted water stream beside road and another without notified pollution which is church stream.
Going into details of the article, I realized that the necessary information needed to evaluate the experimental procedures were not included. However, when conducting an experiment, the independent and dependent variable are to be studied before giving a final conclusion.
The input variables are the ones that I can change in order to affect the experiment and the outcome variables are the ones I will measure to see how the input variable has affected it. Input Variables --------------- Amount of calcium carbonate Amount of hydrochloric acid Surface area of calcium carbonate Concentration of hydrochloric acid Temperature of hydrochloric acid Introduction of a catalyst Outcome variables ----------------- Amount of calcium chloride released Amount of water released Amount of carbon dioxide released Change in weight
The dependent variable that will be measured is the height at which the ball bounces back. The control variables that will need to be kept constant if the results are to be as accurate as possible are. 1. What is the difference between a. and a. The weight of the ball; we will use the same ball throughout the experiment to ensure that the results are as accurate as possible.
The independent variable in this experiment were the students and the role they were randomly assigned to guard or prisoner. The dependent variable was the behavior of each volunteer based on the role they were randomly assigned to for example; how harsh a guard would punish a prisoner, or a prisoner’s reaction to the punishment. Mariak Konnikova doesn’t really explain how the variables were measured but I’m guessing it was measured based on participant’s attitude for example if they lost a sense of themselves and succumbed to the roles they were assigned
The independent variable is the salts that was used in the experiment, sodium thiosulfate and citric acid. This is because the scientist is changing the the different salts every trial.
The tennis ball is the constant variable factor (the variable that is kept the same, to make the investigation valid). The ball will dropped from increasing heights (cm-25, 50, 75,100,125,150,175,200) and the bounce of the ball will be measured. A sample size of 3 results will be taken from each height the ball is dropped. The same investigation will then be repeated, but one of the independent variables will be changed.
Independent variables: The temperature of hcl gas will be decreased and increased throughout the experiment.
The aerodynamic efficiency is the single most important element in designing a competitive car for professional racing or getting the car model on the front of a Car and Driver or Motortrend. Aerodynamics is the study of the motion of gases on objects and the forces created by this motion. The Bernoulli effect is one of the most important behind car design. The Bernoulli Effect states that the pressure of a fluid, in gaseous or liquid state, varies inversely with speed or velocity and a slower moving fluid will exert more pressure on and object than the same fluid moving slower (Yager). The goal of car designers is to make the air passing under a car move faster than the air passing over the car. This causes the air passing over the car to create more downforce than the air passing under the car creates upforce creating a force additional to the car’s weight pushing the car to the road. Large amounts of downforce are needed to keep light cars grounded at high speed and keep to cars from sliding around turns at high speeds.
Variable is everything which determined by the researcher to be studied in order to obtain the information about it and then be deducted (Sugiyono, 2013:61). In this research, th...
Dependent Variable ------------------ Rate at which the bubbles of oxygen rise, which will be calculated by observing how many bubbles of oxygen rise to the surface of a measuring cylinder (by means of downward displacement) in one minute. This will be measured in bubbles per ten seconds. Control variables: ¨ Volume of substrate used: 100ml ¨ Temperature: taken place at room temperature 21 degrees centigrade ¨ Type of substrate used: Hydrogen peroxide ¨ Mass of meat used: 5g ¨ Amount of water in the test tube in which the oxygen bubbles downward displaces in the water. This is so the time taken for each individual bubble to effectively rise to the bottom of the test tube will take the same amount of time.
Challenge plays an essential role in defining a sport; it provides the individual with the feeling of achievement in success. Skiing poses challenge even in its simplest foundations. Skiing on a poor quality hill, with icy snow and poor upkeep can sometimes create more challenge than a well-groomed slope. Skiing in the backcountry away from lifts and other people in freshly fallen snow provides an opportunity for the best of skiers to test t...
If the launching degree is not kept constant for each trial, the independent variable will not properly correlate with the dependent variable due to the addition of the second independent variable.