Who wouldn’t love watching high speed cars— Running, Crashing Overtaking one other???

We are going to answer questions such as, How normal tyres differ from slick tyres? Why only slick tyres are suitable for racing? How friction plays an important role in racing?

We will be inspecting the role of physics in racing as well.. We bet that from now on, racing will be more exciting and much more fun for you .

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In autumn when we see dry and yellow leaves falling all around us, we feel that it is happening only because of changing season and that this is just a physical change. However, this is not the case.

-The yellowing of leaves is a Chemical Change.

-Chlorophyll is responsible for the green color of the leaves.

-However leaves also contain yellow and orange pigments which are masked or hidden by the green chlorophyll .

-During dry seasons the leaves undergo a chemical reaction in which the chlorophyll breaks down . When chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves the part of their fall splendor.

So when the weather changes, some plants break down all the green pigment. This lets beautiful yellows, oranges, and reds become visible during autumn. Hence, when leaves become OLD they become YELLOW and fall. And this change is a CHEMICAL change.

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What exactly is happening inside your mouth?

Watch out this interesting video to get the answer!

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https://youtu.be/6gIFGVkfp2k

In such a case, even a thinner sheet of cotton above the blanket does wonders!! Have you ever wondered what could be the reason behind this? Put your genius brain cells to work and try to come up with a possible explanation for this. And in case you’re still unclear, don’t worry, Experihub is here to help!

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Venus, though the twin of our planet, stands in complete contrast to it in almost every aspect, if not in all aspects. It is the brightest planet. it is the second planet from the Sun. One factor that completely sets this planet apart from ours is that it rotates “clockwise.” Therefore, the east witnesses the sun setting instead of rising and vice versa.

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The holes, simply let the air pass through, without any resistance. When air hits the hoarding, the hoarding board acts as a barrier in its path, so the air will try to push it If the air is too strong the board won’t be able to hold it, resulting in the airflow tearing the hoarding to make its way However when there are holes in the hoarding, then then the air hitting the hoarding will find a way to pass through holes in the hoarding, and will not damage it.

Watch the video above to get the answer.

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Permeability depends on solubility, charge, or chemistry, as well as solute size. Water molecules travel through the plasma membrane, tonoplast membrane (vacuole) or protoplast by diffusing across the phospholipid bilayer via aquaporins (small transmembrane proteins similar to those responsible for facilitated diffusion and ion channels). Osmosis provides the primary means by which water is transported into and out of cells. 

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Heat transfer by thermal radiation may be minimized by silvering flask surfaces facing the gap but can become problematic if the flask’s contents or surroundings are very hot; hence vacuum flasks usually hold contents below the boiling point of water.

Most heat transfer occurs through the neck and opening of the flask, where there is no vacuum. Vacuum flasks are usually made of metal, borosilicate glass, foam or plastic and have their opening stoppered with cork or polyethylene plastic. Vacuum flasks are often used as insulated shipping containers.

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Main concepts

The following are some of the most important concepts in geometry.

• Axioms

Euclid introduced certain axioms, or postulates, expressing primary or self-evident properties of points, lines, and planes. He proceeded to rigorously deduce other properties by mathematical reasoning. The characteristic feature of Euclid’s approach to geometry was its rigor, and it has come to be known as axiomatic or synthetic geometry.

• Points

Points are generally considered fundamental objects for building geometry. They may be defined by the properties that thay must have, as in Euclid’s definition as “that which has no part”, or in synthetic geometry. In modern mathematics, they are generally defined as elements of a set called space, which is itself axiomatically defined.

• Lines

Euclid described a line as “breadthless length” which “lies equally with respect to the points on itself”. In modern mathematics, given the multitude of geometries, the concept of a line is closely tied to the way the geometry is described. For instance, in analytic geometry, a line in the plane is often defined as the set of points whose coordinates satisfy a given linear equation, but in a more abstract setting, such as incidence geometry, a line may be an independent object, distinct from the set of points which lie on it. In differential geometry, a geodesic is a generalization of the notion of a line to curved spaces.

• Planes

In Euclidean geometry a plane is a flat, two-dimensional surface that extends infinitely; the definitions for other types of geometries are generalizations of that. Planes are used in many areas of geometry. For instance, planes can be studied as a topological surface without reference to distances or angles; it can be studied as an affine space, where collinearity and ratios can be studied but not distances; it can be studied as the complex plane using techniques of complex analysis; and so on.

• Angles

Euclid defines a plane angle as the inclination to each other, in a plane, of two lines which meet each other, and do not lie straight with respect to each other. In modern terms, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

• Curves

A curve is a 1-dimensional object that may be straight (like a line) or not; curves in 2-dimensional space are called plane curves and those in 3-dimensional space are called space curves.

• Surfaces

A surface is a two-dimensional object, such as a sphere or paraboloid. In differential geometry and topology, surfaces are described by two-dimensional ‘patches’ (or neighborhoods) that are assembled by diffeomorphisms or homeomorphisms, respectively. In algebraic geometry, surfaces are described by polynomial equations.

• Length, area, and volume

Area and volume can be defined as fundamental quantities separate from length, or they can be described and calculated in terms of lengths in a plane or 3-dimensional space.Mathematicians have found many explicit formulas for area and formulas for volume of various geometric objects. In calculus, area and volume can be defined in terms of integrals, such as the Riemann integral or the Lebesgue integral.

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