4 years ago

Write down the equation, in words, for the formation of rust.

Physics

1 answer:

Free_Kalibri [48]4 years ago

8 0

Answer:

Fe2O3

Explanation:

The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3. Water is necessary for the oxidation reaction to occur and to facilitate transport of the electrons.

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3 years ago

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An artillery shell is fired at a target 200 m above the ground. When the shell is 100 m in the air, it has a speed of 100 m/s. W

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Explanation:

Below is an attachment containing the solution.

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3 years ago

Ethan pushes a wooden box across a carpeted floor. Then he pushes the same box across a smooth marble floor. Why does Ethan find

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A 2.2 kg box is sliding along a frictionless horizontal surface with a speed of 1.8 m/s when it encounters a spring. (a) Determi

iogann1982 [59]

Answer:

a) $k = 2851.2\,\frac{N}{m}$ , b) $v = 0.54\,\frac{m}{s}$

Explanation:

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$k = 2851.2\,\frac{N}{m}$

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4 years ago

A small block is released from rest from the edge of a large hemispherical frictionless bowl with radius 3 m. As the mass passes

andreyandreev [35.5K]

Explanation:

It is given that,

Radius of bowl, r = 3 m

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$v=\sqrt{2\times 9.8\ m/s^2\times 3\ m}$

v = 7.66 m/s

v = 7.7 m/s

So, the speed of the mass at the bottom of the bowl is 7.7 m/s. Hence, this is the required solution.

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3 years ago