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bearhunter [10]
3 years ago
12

The mixture you separated was mixture oof iron filings, sand, and salt. Based on your understanding of matter, is this mixture a

homogeneous mixture or heterogeneous mixture? How do you know? A. Heterogeneous mixture-the parts are not uniformly mixed. B. Homogeneous mixture-the parts are uniform mixed C. Heterogenous mixture-the parts are uniformly mixed d. Homogenous mixture-the parts are not uniformly mixed
Physics
2 answers:
scZoUnD [109]3 years ago
3 0
<span>The answer is B, because a heterogeneous mixture consists of elements that have the same appearance and composition, If sand, salt, and iron filings are combined, they would look like one uniform element rather than three separate elements.</span>
lozanna [386]3 years ago
3 0

Answer: Heterogeneous mixture

A mixture forms when different elements are put together and yet they are distinct. it means there is no change in the properties of individual components of a mixture. A mixture can be of two kinds: Homogeneous and Heterogeneous mixture. A homogeneous mixture is the one which has uniformity in its every part. For example: salt mixed in water is a homogeneous mixture. A heterogeneous mixture has visibly distinct components. The mixture was of iron fillings, sand and salt is a homogeneous mixture as the component parts are not uniformly mixed.

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Explain how a refrigerator works to cool down warm objects that would otherwise be room temperature
expeople1 [14]

Answer: evaporation

Explanation:

Refrigerators work by causing the refrigerant circulating inside them to change from a liquid into a gas. This process, called evaporation, cools the surrounding area and produces the desired effect.

8 0
3 years ago
Why does the Polaris appear to remain stationary in the night sky when other stars show an apparent pattern?
yanalaym [24]
Because one pole of the Earth's axis of rotation (the North one) points
almost exactly toward Polaris.

If Polaris had a pimple or a bump somewhere on its edge, you'd see
the bump rotate around the whole edge, like a clock, once a day.  But
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3 0
3 years ago
If the distance between two masses is tripled, the gravitational force between changes by a factor of:_______
adell [148]

Answer:

option A

Explanation:

given,

distance between two masses is doubled

new distance, r' = 3 r

using gravitational force equation

F = \dfrac{GMm}{r^2}............(1)

new gravitational force

F' = \dfrac{GMm}{r'^2}

now from the given condition

F' = \dfrac{GMm}{(3r)^2}

F' = \dfrac{GMm}{9r^2}

F' = \dfrac{1}{9}\dfrac{GMm}{r^2}

now, from equation (1)

F' = \dfrac{1}{9}F

\dfrac{F'}{F} = \dfrac{1}{9}

now, the change in gravitational force factor is equal to \dfrac{1}{9}

Hence, the correct answer is option A

3 0
3 years ago
1. A 0.40 kg ball is launched at a speed of 16 m/s from a 22 m cliff.
Masja [62]

Answer:

51.2 J, 86.2 J, 137.4 J

Explanation:

The kinetic energy of the ball is given by:

K=\frac{1}{2}mv^2

where

m = 0.40 kg is its mass

v = 16 m/s is its speed

Substituting,

K=\frac{1}{2}(0.40)(16)^2=51.2  J

The potential energy of the ball is given by

U=mgh

where

m = 0.40 kg

g=9.8 m/s^2 is the acceleration of gravity

h = 22 m is the heigth of the cliff

Substituting,

U=(0.40)(9.8)(22)=86.2 J

Finally, the total mechanical energy is the sum of the kinetic energy and the potential energy:

E=K+U=51.2 + 86.2=137.4 J

4 0
3 years ago
If your bedroom is cold, you might feel warmer with several thin blankets than with one thick one
Nimfa-mama [501]

Answer: Yos

Explanation: Becouse i experimented that btw

4 0
3 years ago
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