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kumpel [21]
2 years ago
9

What is meant by rusting​

Physics
2 answers:
Aneli [31]2 years ago
8 0

Answer:

<em>The</em><em> </em><em>formation</em><em> </em><em>of</em><em> </em><em>reddish</em><em> </em><em>brown</em><em> </em><em>ferric</em><em> </em><em>oxide</em><em> </em><em>on</em><em> </em><em>iron</em><em> </em><em>by</em><em> </em><em>low</em><em> </em><em>temperature</em><em> </em><em>oxidation</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>presence</em><em> </em><em>of</em><em> </em><em>water</em><em> </em><em>.</em><em> </em>

<em>make</em><em> </em><em>me</em><em> </em><em>as</em><em> </em><em>brilliant</em><em> </em><em>answer</em><em> </em>

Setler79 [48]2 years ago
3 0

The process of formation of a reddish-brown substance on the surface of the iron objects in the presence of flaky moisture and air is called rusting.

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A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the
Sergio039 [100]

Answer:

W = 1.06 MJ

Explanation:

- We will use differential calculus to solve this problem.

- Make a differential volume of water in the tank with thickness dx. We see as we traverse up or down the differential volume of water the side length is always constant, hence, its always 8.

- As for the width of the part w we see that it varies as we move up and down the differential element. We will draw a rectangle whose base axis is x and vertical axis is y. we will find the equation of the slant line that comes out to be y = 0.5*x. And the width spans towards both of the sides its going to be 2*y = x.

- Now develop and expression of Force required:

                                             F = p*V*g

                                             F = 1000*(2*0.5*x*8*dx)*g

                                             F = 78480*x*dx

- Now, the work done is given by:

                                             W = F.s

- Where, s is the distance from top of hose to the differential volume:

                                             s = (5 - x)

- We have the work as follows:

                                            dW = 78400*x*(5-x)dx

- Now integrate the following express from 0 to 3 till the tank is empty:

                                           W = 78400*(2.5*x^2 - (1/3)*x^3)

                                           W = 78400*(2.5*3^2 - (1/3)*3^3)

                                           W = 78400*13.5 = 1058400 J

 

5 0
3 years ago
What is the average speed of a boy who jogs 250 meters in 110 seconds
Ede4ka [16]

2.27 mps repeating.

This is the last question ill ever answer here. Thanks for being the last.

8 0
3 years ago
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How are metal bridges built to cope with changes of temperature?
nirvana33 [79]
As the metal expands as does the road bed so neither really effevts those foing over the bridge. as it is hot the metal will expand and so will most tarmac on roads.
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2 years ago
Haileys comet is a comet that passes close to earth every 75 years. based on this passage, which gravitational attraction has th
yawa3891 [41]

Answer:

gravity lol

Explanation:

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slavikrds [6]

Answer: This phenomenon happens due to upthrust exerted by water.

Explanation:

We know that,

Liquid Pressure is directly proportional to the height of the vertical column in the liquid.(P∝h)

When a bucket filled water is sunk into the water container, there occur difference in the pressure in top and bottom of the water container. Due to this, water exerts an upward force on the bucket filled with water. This is called Uprthrust.

Upthrust on the bucket makes the bucket filled with water lose some of it's weight and causes apparent loss in weight.

Hence, the bucket filled with water seems light while it sinks into water.

6 0
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