What do wind turbines do to moving air?

2 answers:

7 0

The giant fans you sometimes see (mostly in the countryside) are wind turbines. Although they look like fans, spinning around in place, functionally, they’re the opposite of fans. Instead of using electricity to generate wind, as fans do, wind turbines use wind to generate electricity. Sound interesting? Let’s find out how.

ohaa [14]2 years ago

3 0

They transform kinetic (mechanical/moving) energy into electrical energy that is used to run homes and such.

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Law of action-reaction

anzhelika [568]

Answer:

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

7 0

2 years ago

What us the % composition of oxygen (O) in iron (III) hydroxide, Fe(OH)<br> 3?

S_A_V [24]

Answer:

44.91% of Oxygen in Iron (III) hydroxide

Explanation:

To solve this question we must find the molar mass of Fe(OH)3 and the molar mass of the oxygen in this molecule. Percent composition will be:

<em>Molar mass Oxygen / molar mass Fe(OH)3 * 100</em>

<em />

<em>Molar mass Fe(OH)3 and oxygen:</em>

1Fe = 55.845g/mol*1 = 55.845

3O = 16.00g/mol*3 = 48.00 - Molar mass of Oxygen

3H = 1.008g/mol*3 = 3.024

55.845 + 48.00 + 3.024 =

106.869g/mol is molar mass of Fe(OH)3

% Composition of oxygen is:

48.00g/mol / 106.869g/mol * 100 =

<h3>44.91% of Oxygen in Iron (III) hydroxide</h3>

7 0

2 years ago

You drop a rock weighing 23.2 g into a graduated cylinder that contains 55 mL. The level of the water rises to 62 mL. What is th

ra1l [238]

The density of the rock is 3.314g/mL

CALCULATE DENSITY:

According to this question, a rock weighs 23.2g. After dropping the rock into a graduated cylinder containing 55mL of water, the level changes to 62mL.