Physics, 18.01.2020 01:31 hardwick744
Imagine you're in a completely dark room with no windows and you cut a 1-ft2 round hole in the roof. when the sun is high in the sky, about 100 w of solar power enters the hole. on the floor where the light hits, you place a beach ball covered with aluminum foil, with the shiny side out. discuss the illumination in your room compared with that of a 100-w incandescent lightbulb?
Answers: 3
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Aflower pot weighing 3 newtons is sitting on a windowsill 30 meters from the ground is the energy of the flower pot potential or kinetic? how many joules is this
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Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger
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Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)
Answers: 3
Imagine you're in a completely dark room with no windows and you cut a 1-ft2 round hole in the roof....
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