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You are trying out for the position of place-kicker on a professional football team. With the ball teed 50.0 m from the goalposts with a crossbar 3.05 m off the ground, you kick the ball at 30 m/s and 30° above the horizontal. (a) Is the field goal attempt good? no yes (b) By how much is it under or over the bar? m (c) How far behind the plane of the goalposts does the ball land?
a room with insulated walls is initially at the outdoor temperature of 21degc. the room contains a 100-w light-bulb a
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
refridgerant 410a is initially at 120 f and quality of 30. it undergoes a constant-pressure process. the final state is
a light globe dissipates 200w as heat. it is exposed to a light breeze of air at 20c which results in a convective heat
the rigid gateoab of fig. p2.58 is hinged ato and rests against a rigid support atb. what minimum horizontal forcep is
a rocket is fired from rest at x0 and travels along a parabolic trajectory described by y2120103xm. if the x component
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Determine (a) the velocity of the air at the duct inlet and (b) the temperature of the air at the exit.
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non-equilibrium statistical treanor distribution for vibrationally excited molecules. based on the non-equilibrium
consider a naca 0009 airfoil that has a plain flap whose length is 0.2c and which is deflected 25. a. calculate cl and
in a constant-pressure process steam at a 100 psia is presented to the piston of a pump and causes it to travel 3 in.
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