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2 years ago

What is meant by rusting

Physics

2 answers:

Aneli [31]2 years ago

8 0

Answer:

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

make me as brilliant answer

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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17 copper wires of length l and diameter d are connected in parallel to form a single composite conductor of resistance R. What

Lubov Fominskaja [6]

Answer:

$\frac{D}{d} = 4.12$

Explanation:

As we know that resistance of one copper wire is given as

$r = \rho \frac{L}{a}$

here we know that

$a = \pi (\frac{d}{2})^2$

now we have

$r = \rho \frac{L}{\pi (\frac{d^2}{4})}$

$r = \rho \frac{4L}{\pi d^2}$

now we know that such 17 resistors are connected in parallel so we have

$R = \frac{r}{17}$

$R = \rho \frac{4L}{17 \pi d^2}$

Now if a single copper wire has same resistance then its diameter is D and it is given as

$R = \rho \frac{4L}{\pi D^2}$

now from above two equations we have

$\rho \frac{4L}{\pi D^2} = \rho \frac{4L}{17 \pi d^2}$

$D^2 = 17 d^2$

now we have

$\frac{D}{d} = 4.12$

3 0

2 years ago

Solve ~ <img src="https://tex.z-dn.net/?f=13x%20-%2026%20%2B%2039%20%3D%200" id="TexFormula1" title="13x - 26 + 39 = 0" alt="

Natalka [10]

Explanation:

13x - 26 + 39 = 0

13x=26-39

13x=-13

x= -1

4 0

2 years ago

Read 2 more answers

Beryllium has a charge of +2, and bromine has a charge of –1. Which is the best name for the ionic bond that forms between them?

postnew [5]

There are 2 elements:
Beryllium ( Be + 2 ), metal
Bromine ( Br - 1 ), non - metal
They form the ionic bond:
Be + Br2 → Be Br2
Naming the ionic compound:
on the 1st place is metal. On the 2nd place is non-metal. If compound is binary, use the element name and change ending to - ide .
Answer:
Beryllium Bromide.

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3 years ago

Use pascal and pressure in the same sentence

kozerog [31]

The unit of pressure is the Pascal (Pa), equivalent to $\frac{\text{kg}}{\text{ms}^{2}}$ .

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3 years ago

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Svetradugi [14.3K]

20.0M/S. IS THE HORIZONTAL VELOCITY OF THE BALL JUST BEFORE IT REACHES THE GROUND

12.2 SECONDS IS THE APPROXIMATE TOTAL TIME REQUIRED FOR THE BALL

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3 years ago

What is meant by rusting​

What is meant by rusting