Physics, 11.03.2021 23:00 connorvoss5805
Kam runs 3.6 m/s off a 40-meterhigh cliff to jump into a lake.
a. How long does it take him to reach the lake?
b. What is his vertical velocity be as he hits the water?
c. How far (horizontally) does he land from the cliff?
Answers: 2
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How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?
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6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.
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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.
Answers: 1
Kam runs 3.6 m/s off a 40-meterhigh cliff to jump into a lake.
a. How long does it take him to reac...
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