The dependent variable is: <em>"number of vocabulary words subjects can remember"</em>
<h3>
Which is the dependent variable?</h3>
In an experiment, we basically see how changing one variable affects another variable.
In this case, the experiment is:
<em>" if sleep affects the number of vocabulary words subjects can remember."</em>
Then the hours of sleep would be the independent variable (the one that the scientist can change) and the number of vocabulary words subjects can remember is the dependent variable (that depends on the independent variable).
So the correct answer is:
<em>"number of vocabulary words subjects can remember"</em>
If you want to learn more about variables:
brainly.com/question/15246027
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Ella has both dimes (d) and nickels (n) in her piggy bank. She has a total of 36 coins in all, and has 4 more dimes than nickels. Find how much money she has in her piggy bank using a two-variable, two-equation system.
Ella has both dimes (d) and nickels (n) in her piggy bank. She has a total of 36 coins in all, and has 4 more dimes than nickels. Find how much money she has in her piggy bank using a two-variable, two-equation system.
I believe it is acceleration
<u>Answer:</u>
a) 480 000 J
b) 43 m/s
<u>Explanation:</u>
a)
To calculate the work done by the engine, we can use the following formula:
.
⇒
⇒
b)
We know that the work done by the propeller was converted into motion of the sled, which means the propeller provided the sled with kinetic energy.
∴ work done by propeller = kinetic energy gained by sled
⇒
⇒
⇒
⇒
⇒
This means that its velocity after 40 m was 43 m/s.