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Why small particle has more surface area than larger particle?
That depends upon the shape of the particles. * If they are spherical, the surface area is 4*pi*r^2, where r is the radius of the particle. * If they are cuboidal, the surface area is b*w*h, where b, w, h are the lengths of the sides
Why did mercury form spherical shape and the water not?
It is to do with the surface tension (ST). Mercury has very big ST. Water will form droplets too but on the oily surface. This is because water molecules form hydrogen bonds and the oily (organic) matter cannot form them. Thus, thermodynamically it is more favourable for water to have as little interactions with the organic surface as possible. This is achieved by reducing the surface area in forming a droplet. In a liquid a sort of internal pressure is created because the molecules that are inside (in the bulk) are pulled into all the possible directions, owever the molecules on the surface lack some of the pull. Therefore, they have higher energy and are pulled more inwards than outward. If you imagine all the molecules at the surface (when we imagine the hypothetical liquid being spread a lot) to be pulled in, the matter will 'pack' itself into the lower energy shape with reduced surface area - droplet.
Why is the surface temperature of Venus higher than the surface temperatures of the other inner?
The surface temperature of Venus is higher than the surface temperatures of the other inner planets because of its thick atmosphere.
Why does water bead up on a waxed car but gasoline spreads out?
A waxed car is not hydrophilic, it is not wetted with water. A drop of water falling on such a surface does not speak out wetting the surface. Instead the surface tension of the water drop pulls it into a spherical shape that sits on top of the surface until it either slides off or evaporates.
Double bonds mean higher surface tension?
Double bonds introduce rigidity in the molecule, increasing the attractive forces between molecules and leading to higher surface tension. This increased surface tension allows the molecules to resist external forces and form a more stable surface.
Does a flat worm or a cylindrical worm have a higher surface area to volume ratio?
Flatworms have a higher surface area/volume ratio compared to a cylindrical worm, this is one of the reasons for flatworms to have the structure they do.
Do liquids that have higher tension produce drops that are flatter or more nearly sperical ttan liquids with lowersurface tension?
Surface tension causes molecules to hold to themselves more tightly. Therefore high surface tension liquids, like pure water, will form a taller drop and low surface tension substances, like oil, will spread out and be flat.
What is the difference between 1.50 standard and 1.57 mid index lenses?
Standard index 1.5 lenses Standard index 1.5 lenses are the basic CR-39 lenses, come with anti-scratch hard coating, and are shatter-resistant, suitable for spherical power +/- 2.00 or below, and cylindrical power +/- 1.50 or below. Index 1.57 mid index spherical lenses Index 1.57 spherical lenses are with anti-scratch hard coating. This higher index lens greatly reduces the thickness of the lens edge. This is suitable for spherical power of +/- 4.00 or below with cylindrical power +/- 2.00 or below. Index 1.57 mid index aspherical lenses Index 1.57 aspherical lenses are even thinner and lighter than 1.57 spherical lenses. These lenses come with anti-scratch and anti-reflective coating, greatly reducing the image distortion, suitable for spherical power of +/- 4.00 or below, and cylindrical power of +/- 2.00 or below. High index would be anything greater than the 1.57 lenses, like 1.61 or 1.67 and so on. Each having a degree of benefits and drawbacks unique to it's making.
What are the differences between a spherical and aspherical lens in terms of optical performance and image quality?
Spherical lenses have a uniform curvature across their surface, which can lead to distortions and aberrations in the image quality, especially towards the edges. Aspherical lenses, on the other hand, have a more complex surface that helps reduce these distortions and aberrations, resulting in improved optical performance and higher image quality.
What is a hot glass rod?
It is a cylindrical piece of glass whose temperature is higher than that of its environment.
What is the significance of surface tension of mercury in relation to its unique properties and behavior?
The surface tension of mercury is significant because it is much higher than that of other liquids, making it behave uniquely. This high surface tension allows mercury to form spherical droplets and flow smoothly, even against gravity. This property contributes to its use in thermometers and barometers.
What is cylindrical capacitor?
A cylindrical capacitor is a type capacitor in which two conducting cylinders are used and the dielectric medium is placed in between them .The outer most cylinder is earthed .The capacitance of these capacitors are higher than other
Will a basketball bounce higher on a flat surface or a rocky surface?
the basketball will most likely bounce higher on a flat surface
Why small particle has more surface area than larger particle?
That depends upon the shape of the particles. * If they are spherical, the surface area is 4*pi*r^2, where r is the radius of the particle. * If they are cuboidal, the surface area is b*w*h, where b, w, h are the lengths of the sides
Why did mercury form spherical shape and the water not?
It is to do with the surface tension (ST). Mercury has very big ST. Water will form droplets too but on the oily surface. This is because water molecules form hydrogen bonds and the oily (organic) matter cannot form them. Thus, thermodynamically it is more favourable for water to have as little interactions with the organic surface as possible. This is achieved by reducing the surface area in forming a droplet. In a liquid a sort of internal pressure is created because the molecules that are inside (in the bulk) are pulled into all the possible directions, owever the molecules on the surface lack some of the pull. Therefore, they have higher energy and are pulled more inwards than outward. If you imagine all the molecules at the surface (when we imagine the hypothetical liquid being spread a lot) to be pulled in, the matter will 'pack' itself into the lower energy shape with reduced surface area - droplet.
How is the charge distributed on a non-spherical conductor?
Charge density would be more where the curvature is more. So pointed surface would have max charge density. Hence there is a chance of electrical discharge at the sharp points. This is known as Corona Discharge or Action of Points
Why is the surface temperature of Venus higher than the surface temperatures of the other inner?
The surface temperature of Venus is higher than the surface temperatures of the other inner planets because of its thick atmosphere.
