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What is the control variable in a height versus arm span experiment?
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In an experiment dealing with distance versus velocity which is the independent variable?
It will depend on the experiment. The answer is unclear because the question was not specific enough. There are experiments where either can be the independent variable. Your question is a bit vague, but there might be a solution. The best solution would be if you had your raw data, or remembered the structure of the experiment. Were you measuring velocity at specific distances, or were you measuring distances from set velocities? The set/specific values are your independent variables, and therefore the other quantity depends upon what you measured at those set intervals. The other possibility is in the wording of the question. If it is from your teacher, it is likely that the distance is the independent variable, as older terminology for graphing that uses versus, implies (not a guarantee, see below) that the independent variable is first (versus) the dependent, or x vs. y. Since the question states distance vs. velocity it can be assumed (again, not a guarantee) that distance is the independent and velocity is the dependent. You should ask for clarification of the whole versus phrasing, as some people don't know the order, and it is confusing. For example I had a high school teacher (and many other teachers) who stressed independent vs. dependent when graphing, because x comes before y. I had a college professor who stressed dependent vs. independent as the wording, because slope is y over x. So which is it, is the question; therefore it really is a poor way of describing the graph of the data. Regardless of which word goes before the versus, the independent is graphed on the x-axis, and the dependent is graphed on the y-axis. Next time ask for clarification phrased as _________ as a function of ___________. The first blank is of course the dependent variable, and the last blank is the independent variable.
Explain Why is time an independent variable and position is a dependent variable in a position versus time graph?
Time is an independent variable because it is affected only by when you decide to stop to read its position (not affected by the position). However, time is a dependent variable since the time you record it affects its result. In simpler terms, independent variable is something you can change to alter the dependent variable. You can change the time (0s to 15s etc.) but you cannot change the position.
What are torque specifications for one-inch stainless steel bolt versus a steel bolt?
Torque is difficult value to estimate. Especially, for material like stainless steel. There are many factors that effect the value of torque. One of the biggest variable is friction. Since this is almost impossible to control in "field" applications, it is crucial take this into consideration when designing bolt connections.
What type of graph is used for acceleration?
Speed-Versus-Time, Distance-Versus-Time.
How would a graph look if the speed is constant?
That would depend on the type of axes. If it is an acceleration vs. time graph, then there would be a continual reading of 0m/s/s acceleration, and the graph would be a straight line indicating 0m/s/s at all times. If it is a velocity vs time graph, then there would be a constant value of velocity at all times. If it is a displacement vs time graph, there would be a straight, continuously increasing line.
What describes what you use in an experiment?
The Scientific Method is used to conduct an experiment. The steps to this are ask a question, do research, construct a hypothesis, test hypothesis by doing an experiment, analyze data and draw conclusion and communicate the results.
Which is the dependent variable between average speed versus time?
Dependent variable is usually speed.
Why is a control especially important in biological investigations?
There are three types of variables in a scientific experiment: Independent: Changes which you, the experimenter, control. Dependent: Changes which occur based on the changes you make (Independent) Control: Anything else which might change or influence the dependent variables outside of the independent changes made by the experimenter. Control variables must be monitored and controlled during an experiment to make sure that they are kept equal, otherwise they could make your results false or unreliable. In the Cool Science Projects link, they discuss a plant growing project. You wish to determine the growth difference between plants which have a full eight hours of sunlight versus plants which receive four hours of sunlight. The amount of time the plant is in the full sunlight is the independent variable and one of the dependent variables is the growth rate of each plant. There may be other dependent variables, such as the overall height of each plant. A good example of a control variable might be the amount or type of water used to hydrate the plants during the experiment. If you were to give one plant more water than another, or different qualities of water, you would be further influencing the experiment beyond the initial independent variable. You could not then say that it was strictly the duration of time in the sun which caused the growth or height differential, as it may have been other variables which caused these changes. It's important to be aware of exactly what changed within an experiment, and what did not, in order to keep your findings valid.
What makes a good experiment versus a bad experiment?
A good experiment needs to be a fair test so to have a fair test you need to have a independent variable, a dependent variable and a controlled variable. Independent Variable: The thing you change Dependent Variable: The thing you measure Controlled Variables (there's usually more than one): The things you keep the same. For example if I have 3 kids and I want to find out who can open presents the quickest the independent variable: would be what kid is opening the presents the dependent variable: would be how quick the kids were so their time and the controlled variables: would be the size of the present they used and the wrapping paper on it. Also a experiment should be repeated twice for the best results and then averaged. A bad experiment wouldn't be a test for example changing what should be a controlled variable so if one kid had to open a bigger present than the other kid they would take longer than they would with the same size present so you wouldn't get good results.
What is the height differential in the Atlantic versus the pacific sides of the panama canal?
no
What does independent variable means?
When conducting scientific experiments, the researcher manipulates an "independent variable" (i.e., some physical parameter that can be controlled) in order to measure the effects of such manipulation on a "dependent variable" (i.e., the results of changing the physical parameter of interest). For example, one could lower the temperature in a refrigerator (the temperature being an independent variable) and wait to observe when water left in the refrigerator turns to ice (the change from liquid water to the solid form being the dependent variable). Thus, the change in the dependent variable depends on the manipulation of the independent variable. The independent variable is the variable you change, the dependant variable is what changes as a result of what you change.
What make an experiment a controlled experoment?
A controlled experiment is one where two similar experiments are run in parallel, differing only in the specific intervention. A perfect controlled experiment is one where the experimenter does not know which arm is which, so is looking honestly for the outcome rather than looking for confirmation of an expected outcome. This is called blinding. In medicine, a double-blinded experiment is one where both the experimenter and the subjects are unaware of which arm they are in. Blinding is important where judgment of the outcome is subjective. An experiment on a pain drug will be highly sujective so blinding is vital; an experiment on an antibiotic may not need blinding as the results could be established by serum counts. The main function of a controlled experiment is to isolate other variables in complex systems. The most familiar kind is the standard drug trial, where a drug is compared, double-blinded, in a population which is randomised between the intervention and control arms - this is known as a randomised double-blinded controlled trial, and is required for drug approvals. The control arm may be a placebo (an inert pill), or it maybe the existing treatment. Sometimes multi-arm trials are conducted: new treatment versus current treatment and placebo. The book "Bad Science" by Ben Goldacre has an excellent overview of controlled trials ad their strengths and weaknesses.
What would be the likely height-versus-time graph if the ball were to be dropped from a height and bounced many times?
i dont knoe
Marginal versus variable costing?
Variable cost refers to the TOTAL variable cost of all units, whereas marginal cost is the variable cost of the last unit only. Variable cost is the sum of all the individual marginal costs. The derivative of the Variable Cost is the Marginal Cost. The integral of the Marginal cost is the Variable Cost.
In an experiment dealing with distance versus velocity which is the independent variable?
It will depend on the experiment. The answer is unclear because the question was not specific enough. There are experiments where either can be the independent variable. Your question is a bit vague, but there might be a solution. The best solution would be if you had your raw data, or remembered the structure of the experiment. Were you measuring velocity at specific distances, or were you measuring distances from set velocities? The set/specific values are your independent variables, and therefore the other quantity depends upon what you measured at those set intervals. The other possibility is in the wording of the question. If it is from your teacher, it is likely that the distance is the independent variable, as older terminology for graphing that uses versus, implies (not a guarantee, see below) that the independent variable is first (versus) the dependent, or x vs. y. Since the question states distance vs. velocity it can be assumed (again, not a guarantee) that distance is the independent and velocity is the dependent. You should ask for clarification of the whole versus phrasing, as some people don't know the order, and it is confusing. For example I had a high school teacher (and many other teachers) who stressed independent vs. dependent when graphing, because x comes before y. I had a college professor who stressed dependent vs. independent as the wording, because slope is y over x. So which is it, is the question; therefore it really is a poor way of describing the graph of the data. Regardless of which word goes before the versus, the independent is graphed on the x-axis, and the dependent is graphed on the y-axis. Next time ask for clarification phrased as _________ as a function of ___________. The first blank is of course the dependent variable, and the last blank is the independent variable.
How do you carry out a controlled experiment testing of the effect of green light versus blue light on plant growth?
you dont
Which type of graph is best suited for graphing the height of a plant versus its age?
A line graph
