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3 years ago

Why is it important for humans to help maintain the balance of the carbon cycle

1 answer:

8 0

Because an excess of carbon dioxide could lead to global warming and affect climate drastically causing it to be warmer and destroy habitats such as penguins or polar bears.

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given the question on measuring gravitational acceleration with a pendulum and given results how do I calculate the questions?

balu736 [363]

Answer:

Hindi ko po alam

Explanation:

Kaya sa iba ka nalang mag tanong kac Bobo ako jaan

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2 years ago

Unlike an observational study, an experiment can prove:

Zinaida [17]

A. Cause and effect.

Explanation:

An experiment can prove cause and effect in a study unlike observational studies.

Observational studies is a non-experimental system of investigation.
It helps to identify the causes(independent variable) and the effect(dependent variables).
In observational studies, the variables cannot be controlled and so it is difficult to prove the cause and effect.
An experiment can prove cause and effect because the parameters are tested and can be controlled.

Learn more:

Experiment brainly.com/question/5096428

#learnwithBrainly

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3 years ago

Find an expression for the electric field E⃗ at the center of the semicircle. Hint: A small piece of arc length Δs spans a small

Hatshy [7]

Answer:

Electric Field a the centre $E=\dfrac{Q}{2\pi^2\epsilon_0 R^2}(-\vec j)$

Explanation:

<u>Given:</u>

Total charge on the semicircle =Q

Radius of the semicircle=R

Let consider a elemental charge on the semicircle at an angle $\theta\\$ with the horizontal. Since the The charge distribution is symmetrical about y axis so the there will symmetrical charge on other side. The horizontal component will cancel out each other and vertical component will get added so let dE be the electric Field due to elemental charge

Let $\lambda$ be the charge per unit length such that $\lambda=\dfrac{Q}{\pi R}$

$k=\dfrac{1}{4\pi \epsilon_0}$

Total Electric Field at the centre

$=2dE\sin\theta\\=2\dfrac{k\lambda }{R}\int \sin \theta d\theta\\$

integrating 0 to $\dfrac{\pi}{2}$

$E=\dfrac{2k\lambda}{R}(-\vec j)$

$E=\dfrac{Q}{2\pi^2\epsilon_0 R^2}(-\vec j)$

So the Electric field at the centre is calculated.

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3 years ago

EM Waves have crests, troughs, and wavelengths <br> True or false?

Nezavi [6.7K]

True.........................................

4 0

3 years ago

Read 2 more answers

A ball is tied to a string and whirled in a horizontal circle at a constant 4 revolutions per second. Categorize the following a

Stella [2.4K]

The velocity of the ball is constantly changing because its direction is changing.
The acceleration of the ball is constant and perpendicular to the velocity, towards the center of the circle. The force is also in this direction and constant.
The displacement after one complete revolution is 0.

6 0

3 years ago