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A large tank is filled with methane gas at a concentration of 0.780 kg/m3. The valve of a 1.20-m pipe connecting the tank to the atmosphere is inadvertantly left open for 18.0 hours. During this time, 6.70x10-4 kg of methane diffuses out of the tank, leaving the concentration of methane in the tank essentially unchanged. The diffusion constant for methane in air is 2.10x10-5 m2/s. What is the cross-sectional area of the pipe? Assume that the concentration of methane in the atmosphere is zero.
A rock is thrown with a velocity of 10 m/s @ 45 deg above the horizontal from a bridge 20 m above a river. What is the elapsed total flight time to reach the river
A 270 g ball at the end of a string is revolvinguniformly in a horizontal circle of radius 0.51 m. The ball makes1.7 revolutions in one second. What is the speed of the ball as itgoes around in the circle?
When a high-speed passenger train traveling atvP = 55 m/s rounds a bend, theengineer is shocked to see that a locomotive has improperly enteredonto the track from a siding and is a distance D =1000 m ahead (see figure). The locomotive is moving at..
A ball is thrown from a window with Vo=2m.s at an angle of 53 degrees ABOVE the horizontal. From what height was the ball thrown
a metal block of mass 1.220 kg is hanging from a string. the tension in the string is 7.712 n. the block is submerged
Use the data of this table to find the point between Jupiter and the Sun at which an object can be placed so that the net gravitational force exerted by Jupiter and Sun on this object is zero
Alice drops a rock to a well. She hears the splash of the rock 4.1 seconds later. The speed of sound is 340 m/s. How deep is the well?
assume it takes 7.00 minutes to fill a 30.0-gal gasoline tank.a. calculate the rate at which the tank is filled in
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that the sled travels?
Box A weighs 80 N and rests on a table. A rope that connects boxes A and B drapes over a pulley so that box B hangs above the table
A baseball (m = 145 g) approaches a bat horizontally at a speed of 41.5 m/s (93 mi/h) and is hit straight back at a speed of 45.8 m/s (102 mi/h). what is the average force exerted on the ball by the bat
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