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ale4655 [162]
3 years ago
7

Need Help

Physics
1 answer:
ValentinkaMS [17]3 years ago
3 0

The option that correctly compares a pure substance to a mixture is: B. A pure substance can only be separated by chemical means, whereas some mixtures can be separated by physical means.

A pure substance can be defined as a substance that has a definite and constant (fixed) structure and they are typically made up of only a kind of particles. Thus, a pure substance is a chemical substance that has a constant (fixed) chemical composition and properties.

As a result of a pure substance being a chemical substance, it cannot be separated into its constituents by a physical separation technique or method.

Instead, a pure substance being a chemical substance can only be separated by chemical separation technique or method.

In contrast, mixtures can be separated by a physical separation technique or method.

Find more information: brainly.com/question/24615100

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Work = force × _____<br> A. work<br> B. energy<br> C. distance<br> D. momentum
kati45 [8]
C. distance

sometimes the equation can be:

w = F x D x cos(x)

where cos(x) is the angle between where the force is exerted and the object's displacement
4 0
3 years ago
Read 2 more answers
Formula = solute+solvent=<br>​
Alexus [3.1K]

Answer:

solute + solvent = solution

Explanation:

solute is <em>Any substance that is dissolved in a liquid solvent to create a solution</em>

solvent is <em>A liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution.</em>

and.

solution is <em>A homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.</em>

6 0
3 years ago
How to change V=72km/hr to m/s
lapo4ka [179]
Multiply by (1000 meters / 1 km).
Then multiply by (1 hour / 3600 seconds).

Both of those fractions are equal to ' 1 ', because the top
and bottom numbers are equal, so the multiplications
won't change the VALUE of the 72 km/hr.  They'll only
change the units.

(72 km/hour) · (1000 meters / 1 km) · (1 hour / 3600 seconds)

= (72 · 1000 / 3600) (km·meter·hour / hour·km·second)

=  20 meter/second
7 0
4 years ago
2 Points
Tom [10]
The answers are A and E!
6 0
3 years ago
A student notices that a basketball seems to act differently depending on whether the game is being played on a court with a woo
iVinArrow [24]

Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related ( Step 1 ), you can make predictions that are specific and testable

Explanation:

A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used interchangeably, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research, in a process beginning with an educated guess or thought.

8 0
2 years ago
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