9.81 meters per second squared
Answer:
reservoirs and flows of the carbon cycle and how human activities
explication :
Today, the carbon cycle is changing. Humans are moving more carbon into the atmosphere from other parts of the Earth system. More carbon is moving to the atmosphere when fossil fuels, like coal and oil, are burned. More carbon is moving to the atmosphere as humans get rid of forests by burning the trees.
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Right Atrium, Left Atrium, Pulmonary Trunk, Left Pulmonary Artery, Right Pulmonary Artery, Right Ventricle, Left Ventricle, Inferior Vena Cava, Superior Vena Cava, Acending Aorta, Aortic Arch, Apex, Left Pulmonary Veins, Right Pulmonary Veins, Brachiocepalic Artery, Ligamentum Arteriosum, Auricle, Left Common Carotoid Artery, Left Subclavian Artery, Anterior Cardiac Vein, Anterior Interventricular Artery, Left Coronary Artery (in coronary sulcus, left coronary groove), Great Cardiac Vein, Marginal Artery, Small Cardiac Vein, Right Coronary Artery (in coronary sulcus,Right coronary groove)
Here hope this helps:)
A) Net force in component form: 
B) Magnitude of the net force: 316.2, direction: 
Explanation:
A)
The three forces given in this problem are:



The three forces are given in component form, where the components with unit vector i is the component along the x-direction, while the components with unit vector j is the component along the y-direction.
In order to find the net force in component form, we just need to add the components of the three forces along each direction. Therefore:
- Along the x-direction:

- Along the y-direction:

So, the net force in component form is

B)
The magnitude of a vector F is given by Pythagorean's theorem:

where in this problem,
is the x-component
is the y-component
Substituting,

The direction instead is given by

where the negative sign means the direction is below the positive x-axis.
Learn more about vector addition:
brainly.com/question/4945130
brainly.com/question/5892298
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The answer is hydrogen and helium
hope this helped (: