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3 years ago

How is social media changing the world as we know it?

Physics

1 answer:

Vika [28.1K]3 years ago

4 0

Answer:

Social media has helped many businesses grow and promote itself, and has helped people find a better way to connect and communicate with one another. On the other hand, it's also provided many people with problems involving mental health, emotional insecurities, and waste of time

Explanation:

what they said is correct

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Given a force of 88n and an acceleration of 4m/s2 what is the mass

Ksenya-84 [330]

Answer:

The mass is 22 kilograms

Explanation:

$F=ma$

$88N = m(4m/s/s)$

$m=\frac{88N}{4m/s^{2} }$

$m=22kg$

7 0

3 years ago

When subjected to a force of compression, the length of a bone (compression Young's modulus 9.4 x 109 N/m2, tensile Young's modu

Anarel [89]

To solve this problem it is necessary to apply the definition of Young's Module which states that

$Y_1 = \frac{\frac{F}{A}}{\frac{\Delta l_0}{l}}$

Where,

F = Force

A = Cross sectional Area

L = Length

$L_0$ = Initial Length

We need to find the ratio between the two values when the another values are constant, that is

$\frac{Y_1}{Y_2} = \frac{\frac{\frac{F}{A}}{\frac{\Delta l_1}{l}}}{\frac{\frac{F}{A}}{\frac{\Delta l_2}{l}}}$

$\frac{Y_1}{Y_2} = \frac{\Delta l_2}{\Delta l_1}$

Re-arrange to find $\Delta l_2,$

$\Delta l_2 = \frac{9.4*10^9}{1.6*10^{10}}*3.7*10^{-5}$

$\Delta l_2 = 2.17*10^{-5} m$

Therefore the bone stretch around $2.17*10^{-5} m$

7 0

4 years ago

There are ________ main groups in the modern periodic table of elements.

patriot [66]

The Correct answer: 18

They are also known as families because they are in the same column.

3 0

3 years ago

2. You will need a magnifying glass and a small piece of scrap paper for this demonstration. a. Go outside on a sunny day and pu

andrew-mc [135]

The focal length of a magnifying glass is the distance between the focal point and optical centre of the magnifying glass.

<h3>Focal length</h3>

The focal length, f is the distance from a lens or mirror to the focal point, F.

This is the distance from a lens or mirror at which parallel light rays will meet for a converging lens or mirror or appear to diverge from for a diverging lens or mirror.

A magnifying glass is a converging lens which produces a enlarged, erect and virtual image when an object is placed between the focal point and optical centre.

A magnifying glass will bring to focus at a point sun rays which can cause the paper to catch fire if it is held in place for long.

This point at which the most concentrated ray of light is shining on the paper, is the focal point for that magnifying glass.

Therefore, the focal length of a magnifying glass is the distance between the focal point and optical centre of the magnifying glass.

Learn more about about focal length at: brainly.com/question/25779311

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2 years ago

A Cessna 172 aircraft must reach a speed of 35 m/s for takeoff. How long of a runway is needed if the acceleration of the aircra

vodomira [7]

this should be the answer to your question

7 0

4 years ago