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enot [183]
3 years ago
9

Why do you think the carbon dioxide measurements have increased so much in the last 100 years or so?

Physics
2 answers:
Travka [436]3 years ago
7 0

Answer:

Explanation:

Carbon Dioxide has increased in the last 100 years because we’ve been told it has. We don’t know via our own senses of course, so we just have to accept that it has. I personally don’t know how CO2 levels are measured since different parts of the world have different levels of CO2. For instance, the Pacific Ocean which occupies 30% of the entire planet has no trees or green plants at all and therefore absorbs only small amounts of CO2.

Alla [95]3 years ago
4 0

Answer:

Hello There!!

Explanation:

They have increased alot because of the carbon footprints people leave off like cutting trees and not replanting so that releases alot of CO² into the atmosphere.

hope this helps,have a great day!

~Pinky~

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An apple from the top branch of the tree and an apple from the bottom branch of a tree fall at the same time. Which apple will h
Vedmedyk [2.9K]
B. The apple from the bottom will hit the ground earlier. This is because an increase in height causes an increase in the time that the object will fall, and therefore will affect the final velocity of the falling object. Moreover, the reduction in velocity due to friction from the air should also be considered.
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3 years ago
The particles ejected from the sun during a coronal mass ejection is called
ipn [44]

Answer:

Plasma

Explanation:

A Coronal Mass Ejection (CME) is an outburst of energy that occurs near the outer part of the sun's atmosphere which causes a production of plasma along with a magnetic field.

The outermost part of the sun's atmosphere is called the Solar Corona Although difficult to see, the corona can be seen during a total solar eclipse.

Plasma from CME are clouds of magnetized electrically charged particles which the solar wind causes to travel at a speed of 1.6 million km/hr.

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3 years ago
The screwdriver used by an electrician has a plastic or rubber covers on them why
Nikitich [7]

Answer:

Explanation:

Plastic or rubber are regarded as an insulator, and an insulator does not allow the flow of electric current through them, so the handles of screwdrivers as well as pliers that electricians use in repairing is been covered with plastic or rubber so that electric current is prevented to pass through it to the body of electricians to avoid been electrocuted as well as shock.

4 0
3 years ago
1. To get to school, a girl walks 1 km North in 15 minutes. She
yulyashka [42]

Answer:

Average velocity of the girl is 1.25 m/s.

Explanation:

3 0
3 years ago
An object moving due to gravity can be described by the motion equation y=y0+v0t−12gt2, where t is time, y is the height at tha
LenaWriter [7]

Answer:

t=6.4534 s

Explanation:

This is an exercise where you need to use the concepts of <em>free fall objects</em>

Our <u>knowable variables</u> are initial high, initial velocity and the acceleration due to gravity:

y_{0}=75m

v_{oy} =20m/s

g=9.8 m/s^{2}

At the end of the motion, the <u><em>rock hits the ground</em></u> making the final high y=0m

y=y_{o}+v_{oy}*t-\frac{1}{2}gt^{2}

If we <em>evaluate the equation</em>:

0=75m+(20m/s)t-\frac{1}{2}(9.8m/s^{2})t^{2}

This is a classic form of <u><em>Quadratic Formula</em></u>, we can solve it using:

t=\frac{-b ± \sqrt{b^{2}-4ac } }{2a}

a=-4.9\\b=20\\c=75

t=\frac{-(20) + \sqrt{(20)^{2}-4(-4.9)(75) } }{2(-4.9)}=-2.37s

t=\frac{-(20) - \sqrt{(20)^{2}-4(-4.9)(75) } }{2(-4.9)}=6.4534s

Since the <u><em>time can not be negative</em></u>, the <em>reasonable answer</em> is

t=6.4534s

8 0
3 years ago
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