High temperature and low pressure. At high temperature, the kinetic energy of the gas particles increases and they move farther from each other. At low pressure, the gas particles are less likely to collide with each other.
The element that she discovered was radium.
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:
a medicine or other substance which has a physiological effect when ingested or otherwise introduced into the body.
Explanation:
Answer:
Option b.) Potassium ion, is written correctly.
Explanation:
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