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An object whose mass is 35 lb is subject to an applied upward force of 15 lbf. The only other force action on the object is the force of gravity. Determine the net acceleration of the object, in ft/s2, assuming the acceleration of gravity is constant, g= 32.2 ft/s2. Is the net acceleration upwards or downwards?
a triangular gate abc with the shape of an isosceles triangle and the vertex at point a and the base bc 6 m what is
Steam at 550 lbf/in.2, 70 oF enters a turbine operating at steady state and exits at 1 lbf/in.^2. The turbine produces 500 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
an 80-lb n boy sitting in a stationary 20-lb wagon wants to simulate rocket propulsion by throwing bricks out of the
showing the two upward pulls of the rings on his hands, each of size 380N. Calculate the angle between the wires supporting the rings and the vertical.
oxygen at 710 kpa and 365 celcius enters a staedy flow nozzle with a low velocity and leaves at 90 kpa. if the oxygen
when a small pebble is dropped into a liquid small wave travel outward. the speed of these waes c is assumed to be a
1. what is meant by toughness? how does it differ from strength?2. why is there a transition from ductile to brittle
you are a new engineer at a company that manufactures gas-filled shock absorbers for racing cars. the chief engineer
The force F required to compress a spring a distance x is given by F - Fo = kx where k is the spring constant and Fo is the preload. Determine the work required to compress a spring, whose spring constant is k = 37 kN/m, a distance of 2 cm starting f..
saturated liquid water is compressed from 100 kpa state 1 to 2.5 mpa state 2 in an adiabatic pump having 85 isentropic
a hollow 6 ft. diameter sphere floats half-submerged in seawater. what mass of concrete is required as an external
a velocity field is represented by the expression v ax -bi cyj dtk where a 2 s-1 b 4 m s-1 and d 5 m s-2.
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