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Elina [12.6K]
3 years ago
12

Describe the gravity and magnetic separation technique using sand as an example​

Physics
1 answer:
Svet_ta [14]3 years ago
4 0

Answer:

Gravity separation is an industrial method of separating two components, either a suspension, or dry granular mixture where separating the components with gravity is sufficiently practical: i.e. the components of the mixture have different specific materials and Magnetic separations take advantages of natural magnetic properties between minerals in feed. The separation is between economic ore constituents, noneconomic contaminants and gangue. and saw dust can be separated by gravity separation method. The process can be used for separating insoluble substances which are heavier than liquid by allowing them to settle down on their own due to gravity. The mixture of sand and iron can be separated from each other by using a magnet. Iron gets attracted towards a magnet leaving behind the sand.

<h2>Please mark me as brainliest by clicking on the crown at the bottom of my answer</h2>

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While hammering a nail, you put in 30 Joules of work. The hammer then puts out 10 J of
AfilCa [17]

Answer:

C    Don't worry if you thought it was D. I almost answered that.

Explanation:

Remark

You can get this just by learning the vocabulary.

Efficiency = Work Out / Work In * 100%

Work in = 30J      That's you swinging the hammer.

Work out = 10 J    That's how much of the hammer's work gets to the nail.

Efficiency = (10/30)*100

Efficiency = 1/3 * 100

Efficiency = 33%

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3 years ago
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What is the unit of measurement for power?<br> A. m/s2<br> B. watts<br> C. joules<br> D. newtons
anyanavicka [17]

Power is the rate of doing work or using energy.

The unit of power is the watt.

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3 years ago
The Köppen classification system is used as a classification system for
nirvana33 [79]
It is used to classify the climates around the world

6 0
4 years ago
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An arrow of mass 0.5kg so it has 25J of kinetic energy; find the speed of the arrow v = m/s​
miss Akunina [59]

Answer:

10 m/s

Explanation:

Use the kinetic energy formula:

KE=(1/2)mv^2

I always remember it as Kevin is half-mad, and very square.

25J = (1/2)*0.5kg*(v^2)

50J = 0.5kg*(v^2)

100J = v^2

v = 10 m/s

Check it:

KE = (1/2)*0.5*(10^2)

KE = 25J

yep, it's right!

4 0
3 years ago
A car and a heavy truck roll down a hill and reach the bottom at the same speed. Compared with the momentum of the truck, the mo
RoseWind [281]

Answer:

A. less

Explanation:

The momentum of an object is directly proportional to it mass and velocity. It is the product of mass and velocity of the object. Given as

Momentum (p) = Mass (m) \times Velocity (v)

So the momentum of car,

p_{c} = m_{c}\times v_{c}

Momentum of truck,

p_{t} = m_{t}\times v_{t}

We know that, mass of car is less than that of truck and velocity of the two are same. It is implied that, momentum of car will be less than that of truck.

3 0
4 years ago
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