Answer:
Explanation:
Wind is caused by the uneven heating of the atmosphere by the sun, variations in the earth's surface, and rotation of the earth. ... Wind turbines convert the energy in wind to electricity by rotating propeller-like blades around a rotor. The rotor turns the drive shaft, which turns an electric generator
i believe it would be the same because time doesn't matter when calculating total work done.
Work=FxD
F=force
D=distance
Answer:
Explanation:
given,
In first case Volume remains constant.
Work done in the first case is zero.
In Second case Volume change
V₁ = 0.2 m³
V₂ = 0.11 m³
Pressure, P = 5.5 x 10⁵ Pa
Work done = Pressure x change in volume
W = P ΔV
Hence, Work done when volume changes is equal to
While the idea that we are a bunch of molecules that do not ever "touch" may seem counterintuitive, it is indeed the case. If we think about the structure of an atom, it is made of a nucleus composed of protons and neutrons, and surrounded by electrons. The electrons are moving at very high speeds in random directions all around the nucleus creating electromagnetic fields, defined by various wave functions. These electron clouds are essentially what do the "touching" between molecules.
When two molecules come in contact with each other, rather than solid particles physically touching, it is the two electron clouds of each molecule that are interacting and essentially repelling each other. If we try to bring two negatively charged species together, they will naturally repel one another. Therefore, when two electron clouds try to interact, the electrons will electrostatically repel each other. When this occurs, the force that each electron cloud exerts electrostatically on the other cloud is transmitted to their nuclei.This is how it is related to general objects applying forces to one another. The force of repulsion felt by the electron clouds is ultimately transmitted to the nerve cells in our skin which is perceived as pressure and a sense of touch, despite the fact that no particles are physically touching.
Answer:
Explanation:
Given:
- force applied on the copper wire,
- cross sectional area of the wire,
- Poisson's ratio,
- we have, Young's modulus,
<u>Stress induced due to the applied force:</u>
<u>Now the longitudinal strain:</u>
<u />
<u />
<u />
<u />
<u />
<u />
Now from the relation of Poisson's ratio:
where:
lateral strain
..................(1)
<u>Now we find the diameter of the wire:</u>
<u>When the tensile load is applied its diameter decreases:</u>
The lateral strain is also given as,
Now the final diameter will be:
Now the ratio:
