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An object whose mass is 300 lb experience changes in its kinetic and potential energies owing to the action of a resultant force R. the work done on the object by the resultant force is 140 Btu. There are no other interactions between the object and its surroundings. If the object's elevation increases by 100 ft and its final velocity is 200 ft/s. what is its initial velocity, it ft/s? Let g=32.2 ft/s2.
a 20-kg uniform cylindrical roller initially at rest is acted upon by a 90-n force as shown. knowing that the body
a thermodynamic cycle consist of i 1-2 constant pressure process with p11.4 bar v1 0.028 m3 w1210.5 kj ii 2-3
a 230 v shunt motor having an armature resistance of 0.05 ohms and a field resistance of 75 ohms draws a line current
refrigerant 134a is the working fluid in a solar power plant operating on an ideal rankine cycle. saturated vapor x11.0
a closed rigid container has a volume of 2 m3 and is filled with 4 kg of water at 200 kpa. heat is transferred from the
two m3 of xenonxe are contained in a closed rigid tank at 70 degree c and 2 bar. the tank is heated to a pressure of 10
A refrigerator is maintained at 5°C by removing heat from the refrigerated space at 18,000 kJ/hr. The power input to the refrigerator is 1500 W and the surrounding air is at 36° C.
For each case, determine the specified property data at the indicated states. Locate the state in sketches of the p-v and T-v diagrams.
in a power plant operating on a rankine cycle steam enters the turbine at 500 lbfin2 and 800f and expands to 2 lbfin2
1. how much pressure is required for a force output of 62275 newtons if the effective piston area of the cylinder is
a two-engine jet transport has a loaded weight of 90000 lb and a forward thrust of 9800 lb per engine during takeoff.
in a standard tensile test a steel rod of 22-mm diameter is subjected to a tension force of 75 kn. knowing that
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