Indiana Jones needs to ascend a 10-m-high building. There is a large hose filled with pressurized water hanging down from the building top. He builds a square platform and mounts four 4-cm-diameter nozzles pointing down at each corner. By connecting hose branches, a water jet with 15-m/s velocity can be produced from each nozzle. Jones, the platform, and the nozzles have a combined mass of 150 kg. Determine (a) the minimum water jet velocity needed to raise the system, (b) how long it takes for the system to rise 10 m when the water jet velocity is 18 m/s and the velocity of the platform at that moment, and (c) how much higher will the momentum raise Jones if he shuts off the water at the moment the platform reaches 10 m above the ground. How much time does he have to jump from the platform to the roof?
03/21/16 Rembrandt van Rijn SelfPortrait with Saskia 1636 Etching Double portrait of married couple Rembrandt The Company of Captain Frans Banning Cocq (The Night Watch) 1642 Oil on Canvas Shows the “defensive” musketeer group protecting Amsterdam, the people have become more of a social group 03/23/16 Vermeer Allegory of the Art of Painting 166669 Oil on canvas Woman represents Clio (the muse of history) Self reflective painting (not necessarily Vermeer in the painting though) Alluding to history painting in the genre painting (painting focused on everyday life) o Genre painting is seen as less important/serious than history painting or portraiture Map of the New Republic of Holland (where this was painted) from the 18 century (when this was painted) Rubens: heavy influence on the Rococo movement (Rubenists) Poussin: heavy influence on the NeoClassical (Poussinists) Watteau Return from Cythera / Pilgrimage to Cythera 1717 Oil on canvas Fête Galante genre: landscape with figures wearing more stylish/fancy clothing o Genre created specifically to describe Watteau’s painting style Painterly almost abstract landscape elements with more detail in the figures Statue of Venus on the right side with roses adorning it Carving of a siren on the front of the boat to the left (sirens are the daughters of Venus) o Also shows the good and bad aspects of love Fragonard The Swing 1766 Oil on canvas Similar characteristics to the previous work o Landscape o Fancier dress o Statues