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Kaylis [27]
3 years ago
13

How is one metre length define in SI system?​

Physics
2 answers:
Katarina [22]3 years ago
8 0

Answer:

The meter, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s-1, where the second is defined in terms of ΔνCs. The kilogram, symbol kg, is the SI unit of mass.

Explanation:

physics.nist.com

aleksandr82 [10.1K]3 years ago
8 0

Explanation:

The metre is currently defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km.

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find the coefficient of kinetic friction for a 10 kg box being dragged steadily across the surface with a force of 2.0 Newtons​
Mazyrski [523]

Answer:

0.02

Explanation:

Force, F=\mu_k N where N is normal reaction and coefficient of kinetic friction is \mu_k. Also, N is equivalent to mg ie N=mg where m is mass of an object and g is acceleration due to gravity. Making \muthe subject of the formula then

\mu_k=\frac {F}{mg}

Substituting F with 2 N, m with 10 kg and g with 9.81 then

\mu_k=\frac {2}{10\times 9.81}=0.0203873598369\approx 0.02

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4 years ago
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Answer:

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Explanation:

7 0
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3 years ago
An object with a weight of 20 kg will move _______ an object with a weight of 20 g if the same amount of force is placed on the
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3 years ago
A free falling object has the velocity time graph shown. What is the objects displacement between 0.0 and 6.0s
zloy xaker [14]

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Here acceleration of object is constant as it fall due to gravity so we can use

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d = 0 + \frac{1}{2}*9.8*t^2

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so we can say

d = \frac{1}{2}*9.8*6^2

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6 0
4 years ago
Read 2 more answers
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