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(1) A 1.5 m^3-volume tank holds oxygen gas (M = 32 g/mole) at the pressure of 500,000 Pa. The temperature is 27 C. Find the mass of oxygen in the tank (in kg).
(2) A ice chest is maintained at 0 C by ice placed in it. The chest has a total surface area of 600 cm2 and a thickness of1 cm. The wall of the ice chest is of Styrofoam with thermal conductivity k = 2.3 *10^-4 cal/(cm s C). How much icewill melt in the chest in 4 hours when the outside temperature is 20 C (in g)?
A bullet leaves a standard 45-caliber pistol (5.0-in. barrel) at a speed of 262 m/s. If it takes 1 ms to traverse the barrel, determine the average acceleration experienced by the 16.2-g bullet within the gun and after that compute average force e..
Three charges are fixed in the x-y plane as follows: 1.4nC at the origin (0, 0); 2.4nC at (0.90m , 0); -2.1nC nC at (0, 1.25m)
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
A nuclear power plant generates(output) 500 MW. it is 34% efficient, How much does the water temperature rise
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
When the crate is moving, the frictional force between the floor and the crate has a magnitude of 122.0 N. If the crate starts from rest, explain how fast will it be moving after the man has pulled it a distance of 2.30 m?
A fixed system of charges exerts a force of magnitude 9 N on a 3 C charge. The 3 C charge is replaced with a 10 C charge. What is the exact magnitude of the force
An automobile travels on a straight road for 40.0 km [E] at 30.0 (km/h). It then continues in the same direction for another 40.0 km [E] at 60 (km/h). Estimate the average speed, distance, displacement, & average velocity for the trip.
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
A paperweight, when weighed in air, has a weight of W = 7.4N. When completely immersed in water, though, it has a weight of Win water = 4.40 N. Find the volume of the paperweight.
When are the displacement, velocity, and acceleration equal to zero for the motion of a mass on a spring? A. at maximum displacement B. at minimum displacement C. at the equilibrium position D. at a displacement of 2x E.at a displacement of 1/3x.
Oasis B is located 25 km east from oasis A. A camel starts from oasis A and travels 19.6 km in the direction 14.7 degrees south of east. Then it walks 8 km directly to the north. How far is the camel from oasis B?
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