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In a certain type of molecule, electronic levels i and j are separated by 2 × 10-6 eV.
(a) If the ratio of the numbers of molecules in level j and in level i is 1 : 20, what is the temperature of the system?
(b) If level k is 3 × 10-6 eV above level j, what is the ratio of the number of molecules in level k and the number in level i?
an ideal rankin cycle uses water as a working fluid which circulates at a rate of 80kgs. the boiler pressure is 6 mpa
If the total mass of the vehicle is m and the mass moment of inertia about its C.G. is J0 derive the equations of motion of the vehicle using two different sets of coordinates, as indicated in Section 5.5.
A circular culvert under a highway is 6 ft in diameter and is made of corrugated metal. It drops 1 ft over a length of 500 ft. Calculate the normal discharge when the culvert runs half full
a shaft with a diameter of 100 mm rotates at 1500 rpm. a fluid-film bearing is designed to support a 5 kn load. assume
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
Calculate the standing wave ratios on the sections of line between the transformer and antenna and between transformer and generator.
In 2010, the Rosetta space probe passed within about 3,000 km from an asteroid known as Lutetia (the Latin name for the city of Paris). The shape of Lutetia can be approximated as spherical, with a diameter of about 100 km and density of 3,600 kg · m..
Consider that the velocity of the base has a jump from zero to v0 instantly at t=0. Derive an expression for the acceleration for the base motion from the velocity equation above
an isentropic steam turbine processes 5kgs of steam at 4 mpa which is exhausted at 50 kpa and 100degc. five percent of
A particle of mass m slides without friction inside a three-dimensional conical funnel, whose walls have unit slope and whose center axis is vertical (Figure 10.26). If the particle is launched inside the funnel at height h and horizontal speed s0..
wind turbines are becoming more and more common as a method of energy production wind turbines by their very nature are
a piece of steel has a conductivity of k 15 wmk and a brick has k1wmk. how thick a steel wall will provide the same
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