Density = mass/volume. 5000/50= 100 grams per cubic centimeter. No substance on Earth has anywhere near that density. Tops is about 20 for osmium and gold.
The ability to generalize a study's results to different circumstances is known as external validity that suffers from 7 types of threats.
<h3>What are the threats to External Validity?</h3>
There are 7 major threats to external validity.
- The first threat is sampling bias, in which a sample is not representative of the population.
- The second threat is history, where an unrelated incident can affect the results.
- The third threat is observer bias, in which the traits or actions of the experimenter unintentionally affect the results, resulting in bias and other demand features.
- The fourth threat is the Hawthorne effect, which describes the propensity for individuals to alter their behaviour merely because they are aware that they are being observed.
- The fifth threat is the Testing Effect, in which the results are impacted by whether a test is administered before or after another.
- The sixth threat is the aptitude-treatment, which involves the interaction of individual and group factors to affect the dependent variable.
- The environment, time of day, location, researcher traits, and other variables that restrict the generalizability of the results are included in the seventh threat.
To learn more about external validity, refer:
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Based on the amount of cheese used for the pizzas, the following are true:
- a. Mai uses 2.5 ounces of cheese per pizza.
- b. Mai will need 37.5 ounces for 15 pizzas.
<h3>Cheese used per Pizza. </h3>
This can be found as:
= Ounces of cheese used / Number of pizzas
= 10 / 4
= 2.5 ounces per pizza.
<h3 /><h3>Cheese needed for 15 pizzas. </h3>
= Number of pizzas x Cheese per pizza
= 15 x 2.5
= 37.5 ounces of cheese.
In conclusion, Mai needs 37.5 ounces of cheese to make 15 pizzas.
Find out more on unit rates at brainly.com/question/1316588.
Answer:
Answer. One substance can be separated from another through physical means is a property of every mixture. Mixtures are made up of two or more substances that are different. It is the product of mechanical or chemical substance blending or mixing
Answer:
currect
Explanation:
because excperencing that they become used to it and though they know it is bad, they are still very much used to it.
