Physics, 25.11.2019 23:31 paiged2003
Alarge aquarium of height 4 m is filled with fresh water to a depth of d = 2.30 m. one wall of the aquarium consists of thick plastic with horizontal length w = 8.80 m. by how much does the total force on that wall increase if the aquarium is next filled to a depth of d = 3.30 m? (note: use g = 9.81 m/s2 and rho = 998 kg/m3.)
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Physics, 22.06.2019 03:00
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Physics, 22.06.2019 21:40
Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
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Physics, 22.06.2019 23:30
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 2
Alarge aquarium of height 4 m is filled with fresh water to a depth of d = 2.30 m. one wall of the a...
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