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4 years ago

What is the materials of seprating salt,sand,iron fillings and beads.(Be specific)

Physics

2 answers:

Licemer1 [7]4 years ago

7 0

Explanation:

Generally, materials are separated according to differences in their physical properties. During the separation process, it is important not to chemically change any of the parts of the mixture if possible. This avoids costly chemical processes and loss of material. It is best to try to separate one component at a time, which means that this experiment can be expected to have at least three stages, corresponding to the removal of each component from the mixture.

Physical properties

In this experiment, the three constituent materials in the mixture are solids with significantly different physical properties, which makes separation easier.

Iron is a magnetic solid which is insoluble in water.

Salt is a non-magnetic solid which is soluble in water.

Sand is a non-magnetic solid which is insoluble in water.

IN SPECIFIC:

Iron is magnetic and the other two not, which means a magnet could be used to attract the iron filings out of the mixture, leaving the salt and sand. Salt is water soluble, while sand is not. This means the two can be mixed in water and stirred. The salt will dissolve and the sand willnot.

dsp734 years ago

5 0

Answer: The Materials of separating salt sand and iron fillings is measurement

Explanation: The explanation to the answer is very easy in basic physics

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aksik [14]

The answer is #3: Oxidation because oxidation is when a substance reacts with oxygen, which causes the substance to rust. When a rock contains iron and that iron comes in contact with oxygen, iron oxide is created; this weakens the rock.

3 0

3 years ago

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How do you know that forces are balanced when static friction acts on an object?

lyudmila [28]

By looking at the acceleration of the object.
In fact, Netwon's second law states that the resultant of the forces acting on an object is equal to the product between the mass m of the object and its acceleration:
$\sum F = ma$

So, when static friction is acting on the object, if the object is still not moving we know that all the forces are balanced: in fact, since the object is stationary, its acceleration is zero, and so the resultant of the forces (left term in the formula) must be zero as well (i.e. the forces are balanced).

6 0

4 years ago

A man-made satellite orbits the earth in a circular orbit that has a radius of 32000 km. The mass of the Earth is 5.97e 24 kg. W

Gwar [14]

Answer:

= 3521m/s

The tangential speed is approximately 3500 m/s.

Explanation:

F = m * v² ÷ r

Fg = (G * M * m) ÷ r²

(m v²) / r = (G * M * m) / r²

v² = (G * M) / r

v = √( G * M ÷ r)

G * M = 6.67 * 10⁻¹¹ * 5.97 * 10²⁴ = 3.98199 * 10¹⁴

r = 32000km = 32 * 10⁶ meters

G * M / r = 3.98199 * 10¹⁴ ÷ 32 * 10⁶

v = √1.24 * 10⁷

v = 3521.36m/s

The tangential speed is approximately 3500 m/s.

8 0

4 years ago

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Suppose a cheetah running at a velocity of 5 m/s east slows down. After 15 seconds, the cheetah has reached a velocity of 25 m/s

Darina [25.2K]

Answer:

1.33m/s²

Explanation:

Given parameters:

Initial velocity = 5m/s

Final velocity = 25m/s

Time taken = 15seconds

Unknown:

Acceleration = ?

Solution:

Acceleration is the rate of change of velocity with time.

Acceleration = $\frac{v - u}{t}$

v is the final velocity

u is the initial velocity

t is the time taken

So;

Acceleration = $\frac{25 - 5}{15}$ = 1.33m/s²

5 0

3 years ago

A plane flying horizontally above earth’s surface at 100. meters per second drops a crate. the crate strikes the ground 30.0 sec

Lena [83]

Since the plane is traveling at 100m/s horizontal to the surface of the earth, the crate will always have this horizontal velocity (neglecting air resistance) until it hits the ground. So the answer is 100m/s. Note the vertical speed continues to change as the crate accelerates downward toward earth (again neglecting air effects)

3 0

4 years ago