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Monica [59]
2 years ago
8

When iron pipes come in contact with water and oxygen, iron transfers electrons to the oxygen molecules. Which

Physics
1 answer:
n200080 [17]2 years ago
8 0

Considering the definition of redox reactions, the correct answer is the last option: Oxygen is reduced, and iron is oxidized.

<h3>Oxidation and reduction</h3>

Oxidation is a reaction where an atom, ion or molecule loses electrons while reduction corresponds to the gain of electrons from an atom, ion or molecule.

<h3>Redox reactions</h3>

The oxidation and reduction reactions always occur simultaneously for what are generally known as oxidation-reduction reactions or redox reactions.

That is, a redox reaction is a chemical reaction that occurs between an oxidizing substance and a reducing substance. During the reaction, the oxidizing substance loses electrons and the reducing substance gains electrons.

<h3>Oxidizing and reducing agent</h3>

That is, the oxidizing agent is the one that traps the electrons while the reducing agent is the one that provides the electrons.

<h3>This case</h3>

In this case, when iron pipes come in contact with water and oxygen, iron transfers electrons to the oxygen molecules. So, iron loses electrons while oxygen gains electrons. So oxygen is reduced, and iron is oxidized.

Then, the correct answer is the last option: Oxygen is reduced, and iron is oxidized.

Learn more about oxidation and reduction:

<u>brainly.com/question/10507355?referrer=searchResults</u>

<u>brainly.com/question/14216150?referrer=searchResults</u>

<u>brainly.com/question/10547418?referrer=searchResults</u>

<u>brainly.com/question/14096111?referrer=searchResults</u>

<u>brainly.com/question/24667543?referrer=searchResults</u>

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A stalled car is being pushed up a hill at constant velocity by three people. The net force on the car is Group of answer choice
vfiekz [6]

Answer:

Zero

Explanation:

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

Fnet = Fapp + Fg

Where;

Fnet is the net force.

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Fg is the force due to gravitation.

In this scenario, a stalled car is being pushed up a hill at constant velocity by three people. Thus, the net force on the car is zero because all the forces acting on any physical object is equal to zero and represents a constant velocity; by balancing or cancelling each other out.

According to Sir Isaac Newton's First Law of Motion which is known as Law of Inertia, it states that an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.

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3 years ago
S Suppose you wish to fabricate a uniform wire from a mass m of a metal with density rhom and resistivity rho. If the wire is to
denpristay [2]

The diameter of the wire is 2.8 * 10^-3 m.

<h3>What is the length?</h3>

Mass of the wire = 1.0 g or 1 * 10^-3 Kg

Resistance = 0.5 ohm

Resistivity of copper = 1.7 * 10^-8 ohm meter

Density of copper = 8.92 * 10^3 Kg/m^3

V = m/d

But v = Al

Al = m/d

A = m/ld

Resistance = ρl/A

= ρl/m/ld =

l^2 = Rm/ρd

l = √ Rm/ρd

l = √0.5 * 1 * 10^-3 / 1.7 * 10^-8 * 8.92 * 10^3

l = 1.82 m

A = πr^2

Also;

A = m/ld

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A = 6.2 * 10^-5 m^2

r^2 = A/ π

r = √A/ π

r = √6.2 * 10^-5 m^2/3.142

r = 1.4 * 10^-3 m

Diameter = 2r = 2( 1.4 * 10^-3 m) = 2.8 * 10^-3 m

Learn more about resistivity:brainly.com/question/14547003

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Missing parts;

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