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Shalnov [3]
3 years ago
10

When iron is exposed to oxygen it rusts or oxidizes. Which of these represents the balanced equation for this chemical change?

Physics
2 answers:
aev [14]3 years ago
5 0
Ur answer is D)!! i just took the test 2 lol

ELEN [110]3 years ago
3 0
<span>I think D) 4Fe + 3O2 → 2Fe2O3 is correct.</span>
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A toy car with a mass of 8 kg and velocity of 5 m/s to the right collides with a 5.28 kg car moving to the left with a velocity
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This is a case of elastic collision.
The equation is m1v1i+m2v2i=m1v1f+m2v2f
Substituting we get:
(8)(5)+(5.28)(-1.65)=(8)(0.5)+(5.28)(v2f)
V2f=5.168m/s
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Why are some substances gases at room temperature but others are liquid or solid?
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The presence of strong intermolecular forces favors a condensed state of matter. liquid or solid), while very weak intermolecular interaction favor the gaseous state.

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Define sporulation and fragmentation​
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4 0
3 years ago
a mass m at the end of a spring oscillates with a frequency of 0.78 hz . when an additional 730 g mass is added to m, the freque
ozzi

The value of mass m = 0.506kg

Initial frequency = 0.78Hz

additional mass =  730 g = 0.73kg

New frequency = 0.65 Hz

F = 1/2π \sqrt{x\\}k/m

0.78 =  1/2π \sqrt{k/m}

additional mass,

0.65 = 1/2π \sqrt{k/m+0.65}

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1.44 = m+0.73 / m

1.44m -m = 0.73

1.44m = 0.73

mass m = 0.506kg

a measurement used in physics to express the inertia, a quality that all matter has in common. Effectively, it is the resistance a body of matter offers to a change in its speed or position as a result of the application of a force. The change caused by an applied force is proportional to the mass of the body. The kilograms is the measure of mass in the International System of Units (SI). Its definition is based on the Planck constant, which is set at 6.62607015 1034 joule second. The unit of energy known as a joule is one kilogramme times one square metre per second. The kilogramme is determined by precise measurements of Planck's constant, while the second and metre are already defined in terms of other physical constants.

Learn more about mass here:

brainly.com/question/506625

#SPJ4

4 0
1 year ago
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