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A gas in a rigid vessel is at ambient temperature and at a pressure, P1, slightly higher than ambient pressure, P0. A valve on the vessel is opened, so gas escapes and the pressure drops quickly to ambient pressure. The valve is closed, and after a long time the remaining gas returns to ambient temperature, at which point the pressure is P2. Develop an ex- pression that allows a determination of the ratio of specific heats, k, in terms of the pressures.
A copper wire has a diameter of 1.647 mm. What magnitude current flows when the drift velocity is 1.39 mm/s? Take the density of copper to be 8.92*103 kg/m3.
Two 10 centimeter diameter charged rings face each other, 30 centimeter apart. Obtain the magnitude of the electric field E, at the midpoint between the two rings
A soccer player kicks a rock horizontally off a 36.9 m high cliff into a pool of water. If the playerhears the sound of the splash 2.93 slater, what was the initial speed given to the rock? Assume thespeed of sound in air to be 343 m/s.
It is common to see birds of preyrising upward on thermals. The paths they take may be spiral-like. Find the speed of the bird relative to the ground
Creation of wave Mechanics
A neutron star is composed of neutrons and has a densitythat is approximately the same as that of a nucleus. What is the radius of a neutron star whose mass is one-fifth of the mass of the sun
A baseball player dives into third base with an initial speed of8.15 m/s. how far does the player slide before coming to rest
a racetrack has the shape of an inverted cone as the drawing shows. on this surface the cars race in circles that are
A 60 kg barrel is lifted 2.0 m in the air using a pulley system with a mechanical advantage of 3. How much work does the person do lifting the barrel
After filtering through the atmosphere, the Sun's radiationilluminates Earth's surface with an average intensity of 1.0kW/m2. calculate the average force the radiation exerts on the roof
An elevator is able to raise 9,800 N to a height of 27 m in 20 s. What is the elevator's power output
why does a tile or wooden floor feel colder ahtn a carpeted floor when both are at the same temp? (assume both below room temp) which would feel hotter if they were at the same temperature above room temperature? why?
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