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Air expands adiabatically (no heat in, no heat out) from T = 300 K and P = 100 atm to a final pressure of 1 atm. Treat the gas as ideal with Cp/Cv = 1.4, and decide the final temperature. Compare your result to the boiling points of oxygen (90.2 K) and nitrogen (77.4 K). Could this method result in the liquefaction of air?
An air conditioner is used to keep the interior of a house at a temperature of 20 C while the outside temperature is 35 C. If heat leaks into the house at the rate of 12 kW, and the air conditioner has the efficiency of a Carnot engine, what is the m..
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. obtain the work done on the jet by the catapult
A uniform ladder is 10-m long and it weighs 100-N. The ladder leans against a smooth wall with its base on a sidewalk 6-m from the base of the wall. Find the force exerted on the ladder by the wall
we have 651 g of lead which we have cooled down in the freezer to -5.28 degrees c. we also have a jar containing 1000 g
An L-R-C series circuit, R= 160 Ω, L= 0.700 H, and C= 1.90×10-2 μF. The source has a voltage amplitude of 160 V and a frequency equal to the resonance frequency of the circuit. what is the average power delivered by the source
a 16-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 33 n. starting from rest
A crate that weighs 20 Newton starts from rest and slides down a rough 5.0 meter long ramp, inclined at 25o with the horizontal. Evaluate the speed of the crate at the bottom of the ramp
A water pipe narrows from a radius of r1 = 4.33 cm to a radius of r2 = 3.39 cm. what is the speed of the water in the narrower part
An in finely long thing rod has positive charge uniformly distributed along it. The charge per unit length is lambda. Discover the electric field a distance r from the rod.
The coil of a galvanometer has a resistance of 18.6 ?, and its meter deflects full scale when a current of 6.48 mA passes through it. What is the maximum current that this ammeter can read
A subway train has a sound intensity level of 90 dB, and a boiler shop has a sound intensity level of 100 dB. How many times greater is the new sound intensity of the shop than that of the train?
A heavier mass m1 and a lighter mass m2 are 20.0 cm apart and experience a gravitational force of attraction that is 9.00 10-9 N in magnitude. Determine the value of each individual mass
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