I’m always trying to look for flagship species, talismans to represent whole ecosystems. If you wanna photograph the Arctic, you photograph polar bears. If you wanna photograph Africa, you photograph lions. Well, you can have a wildlife experience in a city, in the urban jungle that is just as wild, just as crazy as anywhere […]

dear students, let’s analyze the oblique collision in two dimensional plane . here we are given, 2 balls of masses, m 1 and m 2, moving with initial speeds u 1 and u 2 in different directions, they collide at a point , and, bounce in different directions, with speeds v 1 and v 2 […]

in this example, it is given that a ball is released , from a height h above a floor with coefficient of restitution e , between floor and ball. we are required to find the number of bounces ball will take before coming to rest . and we are also required to find the total […]

in this example we are given two identical bars, which are connected by an ideal spring of natural length l knot, it is also given that its force constant is k , as shown , and a constant horizontal force f starts acting on one of the bars as shown, we are required to find […]

Martha Lyon: Thank you. As follow up to the several presentations that have been given about planning so far, two this morning and then this great presentation about the trees, I am here to offer a landscape architect’s perspective. As Jason said, my practice is based in New England, and I work on landscapes of […]

in this example it is given that a neutron moving at a speed v undergoes a head on elastic collision with a nucleus of mass number-a at rest . we are required to find the ratio of ki-netic energies of neutron after and before collision. now, let’s analyze this situation, we are given that a […]

– Welcome to the Harvard Art Museums and tonight’s lecture, The Peculiar Problems of Preservation: Life, Death and the Afterlife in the Museum. My name is Rebecca Dolan and I’m a senior living Adams House, concentrating in English. – My name Natalie Gale and I am a sophomore living in Dunster House concentrating in history […]