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Physics, 21.06.2019 13:00
What is the kinetic energy of a 10-kg bicycle moving at 10 m/s
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Physics, 21.06.2019 19:40
Ogleā2013āblgā0723 is an exoplanet that is similar to earth in size and proximity to its star. this exoplanet has mass m=4.18Ć1024kg and radius r=5.66Ć106m. an astronaut whose weight on earth is w=735n lands on the planet. a. calculate m, the mass of the astronaut. b. calculate gp? , the acceleration due to gravity on the surface of ogleā2013āblgā0723. c. calculate wp? , the weight of the astronaut on the surface of ogleā2013āblgā0723. d. calculate v, the minimum velocity required to put an object into orbit above ogleā2013āblgā0723. e. calculate t, the time required to complete an orbit around ogleā2013āblgā0723.
Answers: 3
Physics, 22.06.2019 10:30
Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20Ā°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kgĀ°c) enter at 160Ā°c at a rate of 0.95 kg/s and leave at 95Ā°c. determine the rate of heat transfer to the air and its outlet temperature.
Answers: 2
Arunner starts from rest and has an acceleration of 3 m/s2. how fast is she running after 1.1 second...
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