2 years ago

Un ala de aluminio en un avión de pasajeros es

Physics

1 answer:

Lesechka [4]2 years ago

7 0

Answer:

No lo sé

Explanation:

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A 2.0 kg wooden block is slid along a concrete surface (μk = 0.21) with an initial speed of 15 m/s. How far will the block slide

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Answer:

The distance is 54.6 m

Explanation:

Given that,

Mass = 2.0 kg

Frictional coefficient = 0.21

Initial velocity = 15 m/s

We need to calculate the acceleration

Using formula of frictional force

$F = \mu mg$

$F=0.21\times2.0\times9.8$

$F = 4.12\ N$

We need to calculate the acceleration

$F = ma$

$a = \dfrac{F}{m}$

$a =\dfrac{4.12}{2.0}$

$a=2.06\ m/s^2$

We need to calculate the initial velocity

Using equation of motion

$v^2=u^2-2as$

Put the value

$0=15^2-2\times2.06\times s$

$s = \dfrac{15^2}{2\times2.06}$

$s=54.6\ m$

Hence, The distance will be 54.6 m.

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2 years ago

Which of these statements is correct about Newton's law on gravity?

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Newton's law of gravity does not explain WHY objects exert gravitational force.

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3 years ago

A block of wood has density 0.500 g/cm3 and mass 2 000 g. It floats in a container of oil (the oil's density is 0.750 g/cm3). Wh

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Answer:

2,666.67cm^3

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All we need to do in this problem is divide the mass of the wooden block to the oil's density.

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Best of Luck!

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If we check our definitions in our notes, we can remember that it is the smallest part broken down in a word that provides meaning.

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