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Setler [38]
3 years ago
5

The metric system is a measurement system that is: only used by a few of the nations of the world. used exclusively in chemical

calculations. commonly used by U.S. physical scientists. the official system for all nations of the world.
Physics
1 answer:
inysia [295]3 years ago
7 0

Answer:

The metric system is the official system for all nations of the world.

Explanation:

To make measures, it is necessary to have a set of standardized magnitudes to compare things we want to measure. This set of standardized magnitudes is called a unit system.

The metric system is a decimalized system of measurement which has meters and grams as a basic measurement unit. The metric system is the most used in the world, and also, is the official system for all nations of the world.

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Which statement identifies the chemical property of iron that results in the formation of rust?
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B, It reacts with oxygen to form a new substance

Explanation:

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The difference between the observed points and the regression line points is equal to the:________
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The difference between the observed points and the regression line points is equal to the correlation.

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Which of the following is the greatest component of plasma?
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6 0
3 years ago
Which of the following is not a true statement?<br> v=at<br> O art
shepuryov [24]

Answer:

t = Δa / v

Explanation:

To know which option is not true, we shall fine a relationship between acceleration (a), velocity (v), time (t) and radius (r). This is illustrated below:

Acceleration can simply be defined as the rate of change of velocity with time. Mathematically, it is expressed as shown below:

Acceleration = change in velocity / time

a = Δv / t ..... (1)

But

Δv = v₂ – v₁

Substitute the value of Δv into equation (1)

a = Δv / t

a = v₂ – v₁ / t ....... (2)

From equation (1), make Δv the subject of the equation.

a = Δv / t

Cross multiply

Δv = at .... (3)

From equation (1), make t the subject of the equation.

a = Δv / t

Cross multiply

at = Δv

Divide both side by a

t = Δv /a ...... (4)

From circular motion, centripetal's force is given by:

F = mv²/r

F = ma꜀

Therefore,

ma꜀ = mv²/r

Cancel out m

a꜀ = v²/r

SUMMARY:

a = Δv / t

a = v₂ – v₁ / t

Δv = at

t = Δv /a

a꜀ = v²/r

Considering the options given in question above, t = Δa / v is not a true statement.

8 0
3 years ago
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