The variable "air pressure inside the football" in this experiment is quantitative and dependent variable. Hence, option D is correct.
<h3>What is the dependent variable?</h3>
The dependent variable is the variable that is being measured or tested in an experiment.
In the experiment, the scientist filled the footballs with fix quantity of pressure which was then kept for 12 hours. After 12 hours the pressure inside the footballs was again measured. Pressure here is a quantitative variable.
Since the air temperature is an independent variable. The pressure being the dependent variable depends upon the temperature of the air.
Independent variable; The variable which does not depends upon any other variable.
Dependent variable; The variable which depends upon the independent variable or varies with the change independent variable.
Qualitative variables are variables which cannot be expressed in form of numbers. They generally convey the characteristic, category, quality or type.
Whereas Quantitative variables are the variables which can be expressed in the form of numbers. These are the variables which exist along the continuous sequence.
Learn more about dependent variables here:
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Answer:
3 I'm in college so I know this stuff my guy
Explanation:
sus
Answer: 70 metals,17 nonmetals,metalloids 6
Explanation:
Answer:
See below.
Explanation:
By definition,
<em>Spectroscopy is the study of various absorption and emission spectra of various elements.</em>
In spectroscopy, we tend to analyse and study the atomic spectra which are formed by irradiating atoms with say, alpha particles.
In case of an absorption spectrum, the atom absorbs the energy of a wave ( concerned with a specific wavelength ) and reachs an "excited state". The remaining waves hit a zinc sulphide plate and we see a spectrum forming.
In case of an emission spectrum, the "excited state" atom release radiation, which hits the plate and we see a spectrum forming.
