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Alenkinab [10]
4 years ago
15

In a controlled experiment, which variable does the investigator change?

Physics
2 answers:
bagirrra123 [75]4 years ago
8 0
The investigator changes the independent variable
Bas_tet [7]4 years ago
7 0

Answer:

The manipulated variable is also known as the independent variable

Explanation:

When remembering this remember independent as in you independently change the outcome

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Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecu
AfilCa [17]

Answer:

U

Explanation:

The first law of thermodynamics states that:

\Delta U = Q-W

where

U is the internal energy of the gas, which represents the sum of the chemical and thermal energy stored in the atoms and molecules of the gas

\Delta U represents the variation of internal energy

Q is the heat absorbed by the system

W is the work done by the system

So, the sum of the chemical and thermal energy stored in atoms and molecules is represented by U, the internal energy.

8 0
3 years ago
Read 2 more answers
The critical angle for a light ray travelling from a ruby into ethyl alcohol is 50.6 degrees celsius. Determine the index of ref
stepan [7]
In order to answer this question, I realized that I needed to know the index
of refraction for ruby, so I went and looked it up.  It's  1.762 to 1.770 .

I started trying to remember how to use this number and the critical angle
to find the index of refraction of the other medium.  That's when I saw the
absurd unit "degrees celsius" for the critical angle, and I got discouraged.
But I perked up very quickly, when I realized that I'm still on the "index of
refraction" list, and while I'm there, I might as well just go ahead and
look up ethyl alcohol too.

It's  1.36  .


8 0
3 years ago
A change in the gene pool of a population due to chance is _____.
Mrac [35]
<span>The correct answer should be a genetic drift. Mutations usually occur over a relatively short period of time and usually start with a single unit that transfers the mutation when they procreate. Genetic drifts separate entire populations and in time create new species that cannot procreate with the original species from whence they came.</span>
5 0
3 years ago
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1. When an object moves in space in the presence of a constant force in a certain direction, what are its equations of motion in
BabaBlast [244]

Answer:

<h2>potang ina</h2>

Explanation:

<h3>hope it helpss</h3>

/__–

5 0
3 years ago
Which velocity-time graph is equivalent to the given position-time graph?
Agata [3.3K]

Answer:

A

Explanation:

it's hard to explain... sorry

6 0
3 years ago
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