PLZZZZZZ HELPPP how do we obtain energy from wind PLZ WRITE A PARAGRAPH ABOUT ITTT PLEASEEEEE

2 answers:

7 0

Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.

sladkih [1.3K]3 years ago

5 0

Explanation:

Wind energy, or wind power, is created using a wind turbine, a device that channels the power of the wind to generate electricity. The wind blows the blades of the turbine, which are attached to a rotor. The rotor then spins a generator to create electricity . Wind energy is a renewable energy source that is clean and has very few environmental challenges. Wind power actually starts with the Sun. In order for the wind to blow, the Sun first heats up a section of land along with the air above it. That hot air rises since a given volume of hot air is lighter than the same volume of cold air. Cooler air then rushes in to fill the void left by that hot air and voila: a gust of wind. The Office of Energy Efficiency and Renewable Energy describes a wind turbine as “the opposite of a fan.” Simply stated, the turbine takes the energy in that wind and converts it into electricity. So how does it do that? First, the wind applies pressure on the long slender blades, usually 2 or 3 of them, causing them to spin, much like the wind pushes a sailboat along its path through the water. The spinning blades then cause the rotor, or the conical cap on the turbine, and an internal shaft to spin as well at somewhere around 30 – 60 revolutions per minute. The ultimate goal is to spin an assembly of magnets in a generator which will, well, generate voltage in a coil of wire thanks to electromagnetic induction. Generators require faster revolutions, however, so a gear box typically connects this lower speed shaft to a higher speed shaft by increasing the spin rate to around 1000 to 1800 revolutions per minute. These gear boxes are costly as well as heavy, so engineers are looking to design more “direct-drive” generators that can work at the lower speeds.

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nataly862011 [7]

Answer:

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2. Conceptual models: ties together many ideas to explain a phenomenon or event.

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3 years ago

Which would be more likely to carry out endocytosis: a white blood cell engulfing foreign materials or a cell that excretes horm

Irina-Kira [14]

A white blood cell engulfing foreign materials is more likely to carry out Endocytosis.

Explanation:

Endocytosis is the process by which a cell takes up a macromolecule into is cytoplasm by forming a vessicle.
In the question two cases are given, both the cases involve the formation of membrane bound vessicle but in different ways.
The excretion of hormones involves the movement of molecule outside the cytoplasm. This process is exocytosis.
The engulfment of an antigen by WBC involves taking up of molecule within the cell so that it can be killed and digested. Thus in this case Endocytosis is more likely to occur..