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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)?
you are on a plane that leaves DIA and flies 170 km at 68 east of north and then changes direction to fly 230 km at 48 south of east, after which it makes an emergency landing in a pasture next to a large herd of buffalo.
find the angle counterclockwise relative to the horizontal.
Suppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain
As a result of the friction between their surfaces, after a while, both disks spin at the similar angular speed. Determine the work done by the frictional torque.
In a classical model of the hydrogen atom, the electron orbits a stationary proton in a circular orbit
An electric field of intensity 3.4 kN/C is applied along the x-axis. compute the electric flux through a rectangular plane 0.350 m wide and 0.700 m long if the following conditions are true.
a 2.0 nc charge is placed on the x-axis at x=-3.0cm another 2.0nc charge is placed on the x-axis at x=3.0cm, What is the potential at the origin
The current in a series circuit is 22.0 A. When an additional 12.0-? resistor is inserted in series, the current drops to 11.0 A. What is the resistance in the original circuit
How many revolutions does wheel make throughout the time
Ignoring the mass of the spring, what is the mass of the fish?
Calculate the minimum angle above the horizontal at which Hiawatha must aim in order to outrun the arrow.
A dry cell does 7.5. J of work through chemical energy transfer 5 C between terminals of the cell. What is the electric potential between the two terminal.
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