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Air enters a hot furnace at 627 °C and leaves at 927 °C. Assume the pressure does not change while the air goes through the furnace. What is the initial volume of air entering the furnace if it expands to 1.333 m3 when it leaves the furnace?
A carnot engine operates between reservoirs whose temperatures are650K and 350K. Which change gives the greatest improvement
At what times does the ball pass through half the maximum height? Ignore air resistance and take g = 9.80 m/s2.
Playing near a road construction site, a child falls over a barrier and down onto a dirt slope that is angled downward at 42° to the horizontal, What is the coefficient of kinetic friction between the child and the slope
A truck is traveling at 12.6 m/s down a hill when the brakes on all four wheels lock. Find how far does the truck skid before coming to stop
A hand bicycle pump should compress air from atmospheric pressure to the pressure inside the tire (usually 5 or 6 atmospheres). Please estimate the temperature of the air as it enters the tire.
The graph shows the net external force component Fcos along the displacement as a function ofthe magnitude s of the displacement. The graph applies toa 71.3-kg ice skater. How much work does the net force component doon the skater from
Bicyclists in the Tour de France do enormous amounts of work duringa race. How much work does he do during a 85 km race in which his average speed is11.0 m/s
If the staircase is 25-m high and a 90-kg man runs up the staircase in 35s, how much power does he use? And what is his horse power rating
a particle has a rest mass of 6.64times10-27 kg and a momentum of 2.10times10-18 kg ms.a what is the total energy
Three forces. one of 40.0 N directed due north, the second of 65.0 N due east and a third of 100 N at 35.0 degrees west of south act on an object of 15.0 kg. What is the object's acceleration?
If a 1.00-kHz sound source moves at a speed of 48 m/s toward a listener who moves at a speed of 29.5 m/s in a direction away from the source, what is the apparent frequency heard by the listener
Identify at least two resources outside of your textbook that currently support this one difference.
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