Physics, 22.08.2019 03:30 tyrielle8729
At a college homecoming 20 students lifted a sports car. each student exerted 450n of upward force on the car. a) what is the mass of the car in kg? b) what is its weight in lbs?
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How to tell if a molecule is polar or nonpolar with electronegativity
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Physics, 22.06.2019 14:40
The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.
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Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
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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.
Answers: 1
At a college homecoming 20 students lifted a sports car. each student exerted 450n of upward force o...
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