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A particle travels along a straight line such that in 2 s it moved from an initial position Sa + 0.5 m to a position Sb -1.5 m. Then in another 4s it moves from Sb to Sc +2.5 m. Determine the particle's average velocity amd average speed during the 6-s time interval.
a 2in-diameter steel propeller shaft of an experimental high-speed boat transmits 2500hp at 2000rpm. bending and axial
the jeep has a weight of 2510lb and an engine which transmits a power of 100 hp to all the wheels. assuming the wheels
rocket boosts the speed of a spacecraft from 7500 m/s to 10 500 m/s with a thrust of 890 kN. Calculate the rocket power.
consider the sysstem shown in figure 3-45 where m 2 kg b 4 nxm and k 20 nm. assume that x0 0.1 m and xdot0 0. the
a balloon is to be used to carry meteorological instruments to an elevation of 18000 feet. the balloon is filled with
Two solid cylindrical rods (1) and (2) are joined together at flange B and loaded. If the normal stress in each rod must be limited to 110 MPa, determine the minimum diameter D required for each rod.
a mixing chamber steadily mixes a hot water stream at 80degc and 0.5kgs rate with a cold water stream at 20degc. if the
x 3000 a100 m 75 c kgcd 0.5 skydiver area 0.4m2cd 1.2 parachute area 40m2a sky diver weighing m kg jumps from a
a rigid tank contains a two-phase mixture consisting of 0.2 lb of liquid water and 0.1 lb of water vapor initially at a
a rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 c. after a period of time the pressure
the uniform disk of mass pivots freely on the cart of mass. determine the acceleration of the assembly and the angular
consider an air-standard otto cycle and a modified cycle in which the isentropic compression and expansion processes
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