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A piston-cylinder device contains 2.2kg of nitrogen initially at 100kPa and 25C. The nitrogen is now compressed slowly in a polytropic process during which PV^1.3 = constant until the volume is reduced by one-half. Determine the work done and the heat transfer for this process.
a river has a steady speed of 0.461 ms. a student swims upstream a distance of 1.00 km and swims back to the starting
What is the mean molar mass of an ideal gas that has a specific heat ratio (k) of 1.11, and a specific heat at constant pressure of 1.680 kJ/kg K?
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
a heat pump with refrigerant 134a is used maintain a house at 25 degc by absorbing heat from a geothermal water source
some parasailing systems use a winch to pull the rider back to the boat. during the interval when q is between 20 and
a how would you classify sodium benzoate ionic or molecular or both?b based upon the rules of solublity would an ionic
on a hot summer day a student turns his fan on when he leaves his room in the morning. when he returns in the evening
a ball is dropped from a boat so that it strikes the surface of a lake with a speed of 16.5fts. while in the water the
during practice a player p punts a ball b with a speed vo25 fts at an angle theta 60 degrees and at a height h from
atank of 0.1-m3volume contains air at 298.15k 25degc and 101.33kpa.the tank is connected to a compressed-air line which
a crate with weight w165 lb and mass center g is placed on a slide and released from rest as shown. the lower part of
a spacecraft is in a circular equatorial orbit 1 of radius r0 and speed v0 about an unknown planet mu not equal to
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