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valina [46]
3 years ago
6

Suspensions are a homogeneous mix True False​

Physics
2 answers:
meriva3 years ago
5 0

Answer:

False

Explanation:

Suspensions are not a homogeneous mix as the particles do not dissolve into the liquid as they are solids.

to give you an idea the definition of homogeneous is 'denoting a process involving substances in the same phase (solid, liquid, or gaseous).' and since suspension is a solid within a liquid it is not homogeneous

nirvana33 [79]3 years ago
4 0

Answer:

FALSE

Explanation:

Suspensions are heterogeneous mixtures from which some of the particles settle with time.

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Two in-phase loudspeakers are 3.0 m apart. they emit sound with a frequency of 490 hz. a microphone is placed half-way between t
stira [4]

Answer:

0.35 m

Explanation:

Constructive interference occurs when the difference in the distance between the two speakers is  

0, λ, 2λ,...  

Here λ = v/f = 343/490 = 0.7m  

The first point of interference is the initial point which would mean the distance is the trivial solution of 0  .

A microphone is placed half-way between the speakers and then moved along the line joining the two speakers until the first point of constructive interference is found.

Let x be the distance from the midpoint to the next interference.  

This occurs when 1.5 + x -(1.5 - x) = 0.7

so 2x = 0.7 which means x = 0.7/2 = 0.35m

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3 years ago
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8 0
2 years ago
What is an example of a renewable natural resource?
marin [14]

Answer:

Biomass energy, Wind Energy, Hydro-power, Solar energy are some of the most utilized naturally occuring renewable resources.

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3 years ago
What is the average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8
Alex

Answer:

The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 \frac{m}{s}.

Explanation:

Velocity ​​is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. Then, the average velocity relates the change in position to the time taken to effect that change.

velocity=\frac{displacement}{time}

Velocity considers the direction in which an object moves, so it is considered a vector magnitude.

In this case, the displacement is 192 m and the time period is 8 s. Replacing:

velocity=\frac{192 m}{8 s}

Solving:

velocity= 24 \frac{m}{s}

<em><u>The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 </u></em>\frac{m}{s}<em><u>.</u></em>

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2 years ago
Two whistles blow at the same time. The first whistle has a frequency twice that of the second whistle (it is a higher pitch). W
suter [353]

Answer:

the first one

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