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The last segment of the triple jump tracxk and feild event is the jump, in which the athlete makes a final leap, landing in a sand filled pit. Assuming that the velcity of a 178 lb athlete just before landing is 30 ft/s at an angle of 35 degrees with the horizontal and that the athlete comes to a complete stop in 0.22 seconds after landing, determine the horizontal component of the average impulsive force exerted on his feet during landing?
a piston-cylinder device contains an ideal gas. the gas undergoes two successive cooling processes by rejecting heat to
the radial component of velocity of water leaving the centrifugal pump sketched in figure is 30 fts. the magnitude of
a cold-drawn aisi 1018 steel bar similar to the component shown in the diagram of table a- 15-1 is subjected to an
determine the expressions for attractive and repulsive energies, EA and ER as a functions of r where r is in nm and E is in eV.
Two kilograms of Refrigerant134a, initially at 2 bar and occupying a volume of 0.12 m3, undergoes a process at constant pressure until the volume has doubled. Kinetic and potential energy effects are negligible. Determine the work and heat transfe..
a small 6-mm diameter pin was designed using astm no. 40 cast iron to withstand an axial compressive load of 3.5kn
a tank has an inlet flow with a velocity of 200 ftmin through a 4 inch diameter pipe. the fluid is water at standard
a cylinder has 0.1 kg air at 25oc 200 kpa with a 5 kg piston on top. a valve at the bottom is opened to let the air out
a load p 4000 lb acting at a point a of a beam produces 0.25 in at point b and 0.75 in at point c of the beam. find
to understand the physics of the o-ring we may need to start formulating the problem in a static equilibrium condition.
a rigid vellel with the volume of 10 m3 contains a water-vapor mixture at 400 kpa at 60 percent quality. the pressure
a horizontal disc accelerates from rest at 5 radsec2. the coefficient of static friction between it and the 2.5-kg
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