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3 years ago

What evidence suggests that the ""hole"" in the ozone layer is getting smaller?

Physics

1 answer:

bonufazy [111]3 years ago

7 0

Answer:

NASA sees direct proof for the hole in the ozone layer getting smaller .

Explanation:

According to an research in the year 2017 ' NASA confirmed that size of the ozone hole n September was smaller as it was in earlier three decades ago . They found that chlorine from chlorofluorocarbons (CFC) are reducing which results in the depletion of hole in the ozone layer.

Ozone layer plays an very important role in protecting life on earth from very dangerous rays which cause many deadly diseases and many other problems. Since the world banding the substances which cause ozone depletion , scientists are thinking that by the year of 2070 the hole can recover its size level that it was in year of 1980.

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A rock is thrown horizontally from a high building at 33.8 m/s. What is the magnitude of its velocity 4.25 s later?

Alex17521 [72]

<h2>Answer:53.63 $ms^{-2}$ </h2>

Explanation:

The equations of motion used in this question is $v=u+at$

When a object is projected horizontally from a sufficiently height,the x-component of acceleration remains zero because there is no force that drags the object in x direction.

But,due to gravity,the object accelerates downward at a rate of $9.8ms^{-2}$ .

In X-Direction,

Given that initial velocity= $u_{x}$ = $33.8ms^{-1}$

Using $v=u+at$ ,

$v_{x}=33.8+(0)4.25=33.8ms^{-1}$

In Y-Direction,

Given that initial velocity= $u_{x}$ = $0ms^{-1}$

Using $v=u+at$ ,

$v_{y}=0+(9.8)4.25=41.65ms^{-1}$

$v=\sqrt{v_{x}^{2}+v_{y}^{2}}$

$v=\sqrt{1142.44+1734.72}=\sqrt{2877.163}=53.63ms^{-1}$

7 0

4 years ago

What effect does reducing your carbon footprint have on the environment? A.increases the greenhouse effect

Artyom0805 [142]

<span>B.reduces the greenhouse effect
The greenhouse effect is caused by GHGs in the air... carbon is one of these gases, so reducing your carbon footprint reduces the greenhouse effect</span>

6 0

3 years ago

Read 2 more answers

A sphere is filled with air. If the volume of the sphere is increasing at a rate of 569 cubic inches per minute, what is the rat

Veseljchak [2.6K]

Answer:565

Explanation:

6 0

3 years ago

A rope pulls a 20 kg box up. If the tension in the rope is 275 N, what is the acceleration of the box?

Nana76 [90]

Answer: