E-Commerce Essay Example | Topics and Well Written Essays - 500 words

E-Commerce - Essay Example (b) If books can be downloaded online, how will Amazon's business change? And finally, (c) What do traditional stores have to gain from setting up an e-commerce side to complement their retail stores? Advantages and Disadvantages of Selling Books over the Internet According to Conner-Sax and Krol (1999), the advantages of buying books online are as follows: (a) buyers are able to select from a diverse range of options; (2) discounts are offered and easily availed; (3) books that need to be located could be sourced and information could be relayed to the buyers through email; (4) book reviews are available enabling readers to scan through the gist of the content; and (5) these are safe to purchase online in terms of product packaging and physical characteristics. On the other hand, the disadvantages of online purchases of books are: (a) the inability to pick up the actual book and scan through it; (b) shipping costs need to be paid; and (c) there is a waiting time before it can be use d. Effect of Online Books Downloading online books affects Amazon in terms of decline in the number of books sold or to be sold.

Physics project 2 Essay Example | Topics and Well Written Essays - 750 words - 1

Physics project 2 - Essay Example In work on floating bodies he demonstrated that the orientation of a floating objects is the one that makes its center of gravity as low as possible. He developed mathematical techniques for finding the centers of gravity of objects of uniform density of various well-defined shapes, in particular a triangle, a hemisphere, and a frustum of a circular parabolic. The center of gravity is an important point on an aircraft, as it defines the amount of mass forward or behind the center of gravity that needs to be moved in order to pitch the plane up or down without applying any external forces. In conventional designs the Co G is often located very near the line 1/3rd back from the front of the wing. That is the line where most wings generate their lift, known as the center of pressure (Co P), so by balancing the plane at that point, the lift and weight balance out with no net torque. The Co is sometimes moved slightly to the rear of this line in order to provide the plane with a natural "nose up" tendency when lift increases (like when applying more power). If the balance of the plane is moved too far from the Cog, the control surfaces may have trouble controlling the plane. The actual force generated by the surfaces is typically quite small (a few pounds) but due to their location at the end of the tail (typically) they generate considerable torque to pitch the plane. If the Co starts to move away from the Co P there will be an increasing amount of constant torque they have to counteract, and if it moves too far, it may be more than the controls can counter. The center of gravity is a geometric property of any object. The center of gravity is the average location of the weight of an object. We can completely describe the motion of any object through space in terms of the translation of the center of gravity of the object from one place to another and the rotation of the