Unicamp 2017 2nd phase - Physics Resolution ► Prof Pinguim
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⚡Physics Courses for Vestibular Paulista and ENEM https://professorpinguim.com.br ????Instagram / professorpinguim ???? Subscribe to the channel https://youtube.com/profpinguim?sub_c... Unicamp 2017 2nd phase - Physics Resolution ► Prof Pinguim Statements 0:00 Question 13: The use of the GPS (Global Positioning System) location system has grown considerably in recent times due to a) What is the average scalar speed of a GPS system satellite? b) GPS satellites continuously send the three coordinates that determine your current position and the 12:13 Question 14: Lotus is a plant known for a very interesting characteristic: despite growing in regions a) When a drop of water falls on a lotus leaf, b) Consider a drop of water with an initial velocity vi = 3 mm/s moving and cleaning the surface 30:41 Question 15: Amusement park rides use principles of mechanics to create movements a) Consider a roller coaster in which a cart goes down a ramp with a height H = 5 m and at the end b) Another common ride in amusement parks is the Mexican hat, in which chairs are 40:37 Question 16: Solar energy is the only source of energy for the Solar Impulse 2 airplane, developed at the École Polytechnique Fédérale de Lausanne, Switzerland. a) To take advantage of the energy obtained from the sun's rays and be able to fly both at night and during the day, the Solar b) The wings and fuselage of the Solar Impulse 2 are covered by 270 m2 of solar cells, whose efficiency in converting solar energy into electrical energy is approximately 25%. The plane has a set of 52:11 Question 17: An important instrument in the study of nanometric systems is the electron microscope. In optical microscopes, light is used to visualize the sample under study. N a) The advantage of using electrons is that it is possible to accelerate them to energies at which their length b) One way used to generate electrons in an electron microscope is to heat a filament, a process called the thermionic effect. 1:04:23 Question 18: Controlling the temperature of water and environments has offered society a wide range of a) The refrigeration system used in large facilities, such as shopping centers, removes heat from the b) Most showers in Brazil heat bath water using an electrical resistance. Usually the resistance consists of a wire made of a nickel and chromium alloy with resistivity
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