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a classroom has 70% floor reflectance and 70% of wall reflectance. the room's floor cavity ratio is 1.5. how much is the room's effective floor reflectance?
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a classroom has 70% floor reflectance and 70% of wall reflectance. the room's floor cavity ratio...
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An escalator 14 m long is carrying a 70-kg person from one floor to another 8 m higher. The escalator has a speed of 1.0m/s. How much work does the escalator do in carrying the person to the top?
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A ladder 5m long is standing vertically, flat against a vertical wall, while its lower end in on the horizontal floor. The lower end moves horizontally away from the wall at a constant speed of 1m/s while the upper end stays in contact with the wall. Find the speed at which the upper end is moving down the wall 4 seconds after the lower end has left the wall.
Part A 1.2 kg book-lying on a 0 70 mHgh tati above the floor Duringi process,how much work doos grevity do on the book Express your anawer to two significant figures and inelude the K-1 Value Units Submit Part uring tis pross, bow much work does your hand do on the book? Express your anwwer to two significan nand inslude the W Value Units
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