Mechanic

Model descriptions SWAN model The SWAN model [12,18] is based on the spectral action balance equation rather than the spectral energy balance equation. The evolution of the action density N is governed by Komen et al. [13]: ∂N/∂t+∇_x ⃗ ∙[((c_g ) ⃗+U ⃗ )N]+(∂c_θ N)/∂θ+(∂c_σ N)/∂σ=S_tot/σ where, N(σ.θ) is the action density spectrum, x is space, t is time,θ is wave direction, σ is relative frequency, S_tot is the source term total, and c_g represents the propagation velocity. The first term in the…

The SEM produces a largely magnified image by using electrons instead of light to form an image. A beam of electrons is produced at the top of the microscope by an electron gun. It consists of an electron gun to produce high energy electron beam. A magnetic condensing lens is used to condense the electron beam and a scanning coil is arranged in-between magnetic condensing lens and the sample. The electron detector (Scintillator) is used to collect the secondary electrons and can be converted…

dimensions are 10 mm × 10 mm × 55 mm and V- notch made at angle of 45° with a depth of 2 mm then the experiment was done and values were tabulated. 3.3 SHORE DUROMETER HARDNESS STRENGTH Hardness was defined as materials resisting property to prevent permanent indentation. Durometer is a measure of hardness in polymers, fibre and rubbers where it measures the indentation depth in the material. According to ASTM D2240 tests were conducted on specimen using Durometer in the room temperature [5].…

Critical analyze of the role of third Druk Gyalpo Jigme Dorji Wangchuk in the process of Democratization Bhutan is a small landlocked country which has been remain isolated for decades and left backward, unrecognized and never known to the outside world. However, after Wangchuk dynastic and hereditary monarchy came into existence with Jigme Dorji Wangchuk as third hereditary monarch of Bhutan who was being born to Azhi Phuntsho Choden and second king Jigme Wangchuk at Thruepang Palace (Trongsa)…

T Introduction Jean Piaget a well-known and first psychologist to make a systemic study of cognitive development. He was a very talented scholar and his first scientific paper, on the Albino Sparrow published at the age of ten. After he received his doctoral degree at the age of twenty-two, Piaget formally began his career that would have a profound impact on psychology and education. Today, Piaget is best known for his research on children’s cognitive development. He studied the intellectual…

1. Derive the mathematical expression for the Lorentz transformation equation. relative orientation of the co-ordinate systems indicated in fig.2 A light-signal, which is proceeding along the positive axis of x, is transmitted according to the equation : x - ct = 0 _______ (1). Since the same light-signal has to be transmitted relative to K1 with the velocity c, the propagation relative to the system K1 will be represented by the analogous formula x' - ct' = 0 _______(2) therefore:…

The differences between barefoot and shod running Introduction: Humans have the ability to perform various movements, such as jumping, walking, running, etc. However, tend not to think the essentials of movement as they are not applying the mechanisms that allow them to move from one place to another. The amount of energy required to walk at a comfortable place is very small in comparison with other activities (Everett and Kell, 2010). The study of De Wit et al, (2000) concluded that,…

Introduction: The purpose of this lab is to help students gain a better understanding of physical concepts such as work (which occurs when an applied force moves an object.) torque (defined as a twisting force), energy and rotational inertia (an object's resistance to rotation). Experimental Design: My group’s testable question throughout the mousetrap car experiment was: If we add and subtract factors such as material, weight and shape, from the wheels of our car, how will it affect the…

There are many famous and influential mathematicians that have done many wondrous and extraordinary things, some of these range it Einstein, newton and to pascal. But one interesting one in particular is Pythagoras. Pythagoras is one of the many famous mathematicians that has lived on the earth. What he did in math helped shape math to what it is today. Some things he did was learn math and science as much as he could, create the useful Pythagoreanism, and help progress the advancement of…

The crash box is the car component that is attached at each end of a car’s bumper and its function is to absorb the energy produced during collision or impact. Chapter 1 describes briefly on crash boxes and their characteristics. As mentioned earlier in Chapter 1, crash boxes are designed with or without patterns. Each one of the designs have different energy absorbing characteristic depending on the design and its patterns, shape, size, etc. Most crash boxes are designed with several grooves…