What is a trebuchet? How can a trebuchet use gravity? What does gravity have to do with launching an object? To begin‚ a trebuchet is a medieval catapult used for hurling heavy stones. The trebuchet is thought to have been invented by the Chinese and made it’s way to Europe by AD 500. It was used by armies to throw stones to break down barriers like castle walls. Sometimes‚ bodies of people and animals‚ that had died from disease like the Black Plague‚ were even thrown over the walls to
Premium
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . How Can You Dispose of Excess‚ Unusable Acrylamide? . . What Is the Shelf Life of Acrylamide and Acrylamide
Premium Chemistry Acetic acid Molecular biology
people fall in love and set up a South American Adventures Unlimited travel company. In the early days‚ the company’s benefit is very good‚ but later met a lot of problems‚ such as spending beyond the cost budget‚ time budget problems‚ therefore‚ to the customer to make compensation‚ led to the decline in corporate profits‚ brother of Michael proposed project management advice‚ hope the company can make project management. 2.To what extent does project management apply to Adventures Unlimited
Premium Project management
Assignment – Let’s Be Lefties for a Day! This assignment is designed to shift your viewpoint just a bit and hopefully help make clear what it is like to be different from the mainstream of society‚ as well as how the perception of normality is based on how closely you resemble the majority of people. There are two concepts at work. One is institutionalized discrimination‚ in which groups or categories of people are placed at some level of disadvantage by the normal way that society operates. The
Premium
How Retailers Can Increase In-Store Sales Youngstown State University MGT 6930 September 10‚ 2014 Is there anyone out there who actually enjoys waiting in checkout lines at the store? Retailers across the nation are always searching for ways to become better and faster than their competitors. The main reason people tend to steer towards online shopping is because it is more convenient for them. Likewise‚ the main reason people continue to go to brick and mortar stores is to have the item they
Premium Pricing
acted as the epitome of surveillance when he grows suspicious of Django and Broomhilda during the dinner scene. As Foucault states‚ “Bentham laid down the principle that power should be visible and unverifiable‚” (Foucault 231). The way in which power can be exerted is by creating a ‘dissymmetry’ between the observer and the observed. This means that the individual will always be able to identify the physical manifestation from which they are monitored from‚ but never know the exact moment of when they
Premium Sociology Political philosophy Michel Foucault
How can science be applied to reduce air pollution? Air pollution is the addition of any harmful substances (dust particles‚ fumes or odour) to the atmosphere‚ which causes the damaging of the environment‚ humans‚ animals and plant. Air pollution can result from both human and natural actions. Natural events that pollute the air include wind erosion‚ volcanic eruptions‚ forest fires‚ and natural radioactivity. Pollution from natural occurrences are not very often. Human activities that result
Premium Pollution Air pollution Oxygen
Aim: 1. Find out which substances are essential for rusting to occur. 2. Find out how the rusting process can be inhibited and how it can be promoted. Hypothesis: I predict that air (oxygen) and water are necessary for iron to rust. The nail in water with air will rust while the nails in dry air and in boiled water with no air will not. I also predict that galvanizing the nail with zinc and greasing the nail and painting the nail and electroplating the nail will inhibit rusting. I also predict
Premium Oxygen Iron Water
Oscar Bravo English 2 08/28/14 Labor Day Coming home from work late at night stressed out and tired. You come in and you’re in a bad mood so you ignore your kids because all you really want is some sleep to get ready for another day of working late. People should really complain to their boss about having a no work day‚ cut hours or at least ask for a better pay because they get paid very little for working such long days. In this essay I will explain why people should stand up to their boss about
Premium High school
Summer! Summer! How nice does it feel sitting on the beach as the wind hits you across your face? I recall a time this summer when I went to spend a day at the Seven President Beach in Longbranch‚ New Jersey. This day was a really special day to me. It was a really special day to me because I was able to spend time with my family. The day started off with nice and beautiful weather. Unexpectedly‚ when we first arrived there‚ the weather began to change into foggy and rainy weather. My family
Free Rain Weather Wind