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2 years ago

How can human health be affected by changes in air quality?

1 answer:

3 0

Answer: Air quality changes like pollution and can cause problems in humans like heart disease, lung cancer, and other diseases. Air is formed by a certain ratio of Oxygen, Carbon Dioxide, Argon, and others. When this proportion is disturbed, it can also cause humans health problems. EX: The ash clouds of volcanos can cause silicosis (lung impairment).

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The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the m

svlad2 [7]

Answer:

(D) 0.99 cm

Explanation:

Given that the radius of curvature of the mirror is 25 cm.

And another car is following which is behind the mirror of 20 m.

$u=20m=2000cm$

Focal length is half of the radius of curvature and it is negative for convex lens.

Now the mirror formula.

$1/v+1/u=1/f$

So,

$1/v+1/2000=-1/(25/2)\\1/v=-1/2000-1/12.5\\v=-12.422cm$

Now

Magnification is,

$m=-v/u$

So,

$m=12.422/2000=0.00621$

So, Height of the image

$mh=0.00621\times 1.6 m\\mh=0.0099m\\mh=0.99cm$

Therefore, the image height is 0.99 cm.

4 0

3 years ago

Two iron blocks are the same size. One block has a higher temperature than the other. Which describes the thermal energy of thes

a_sh-v [17]

<span>Higher temperature means greater kinetic energy, which means the warmer block has greater thermal energy.

hoped this helped</span>

7 0

3 years ago

What Coulombs discovered almost 300<br> years ago

tamaranim1 [39]

Answer:

ummm hehe this is my time to shine

Explanation:

MERICIA!!!!!!!!!!!!!!!!!!!!!!!

5 0

3 years ago

Read 2 more answers

Car a has a mass of 5 kg and 10 m/s .cart B has a mass of 10 kg and 5 m/s .which of the following statements best compares the i

weeeeeb [17]

The two cars have same momentum

Explanation:

The momentum of an object is given by the equation

$p=mv$

where

m is the mass of the object

v is its velocity

For the car A in this problem,

m = 5 kg

v = 10 m/s

So its momentum is

$p_A = (5 kg)(10 m/s) = 50 kg m/s$

For car B we have,

m = 10 kg

v = 5 m/s

So its momentum is

$p_B = (10 kg)(5 m/s)=50 kg m/s$

Therefore, the two cars have same momentum.

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

7 0

2 years ago

Please explain what is a Energy is

professor190 [17]

Answer:

<h2><u>The capacity or power to do work/ The ability to do work. </u></h2>

Explanation:

such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another

I hope this help:)

8 0

2 years ago