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A projectile is fired from the top of a conical mound of height h and base radius a. What is the least projection speed that will allow the projectile to clear the mound? [Make use of the parabola of safety.]
A mortar gun is placed on the summit of a conical hill of height 60 m and base diameter 160 m. If the gun has a muzzle speed of 25 m s-1, can it shell anywhere on the hill? [Take g = 10 m s-2.]
a pistoncylinder setup contains 0.1 kg of saturated liquid and vapor water at 100 kpa with quality 25. the mass of the
What is the difference between recirculating and noncirculating hot water systems, and where would the circulating system most likely be used?
a wind tunnel is 6m long and has a cross section of 1m2. air flows through at 70ms at standard sea-level conditions
Consider the jib crane shown in the given image, where it is supported by a pin at C and rod AB. The maximum tension allowed in the rod is 60 kN and the maximum rated force in the pin C is 80 kN. The load has a mass of 2000 Kg with its center of m..
Determine the energy loss when oil with a specific gravity of 0.87 flows from a 4-in pipe to a 2-in pipe through a sudden contraction if the velocity of flow in the larger pipe is 4.0 ft/s.
two identical 3 in. major-diamter power screws single-threaded with modified square threads are used to raise and lower
10 kg of gaseous oxygen is compressed in a piston-cylinder device from an initial state of .8 m3kg to a final state of
a pump has failed in a facility that will be completely replaced in 3 years. a brass pump costing 6000 installed will
a 25d kg iron stove contains 5 kg wood and 1 kg of air. all the masses are at room temperature 20 degrees c and
an equimolar mixture of n2 and o2 is heated to 2100 k at 1 atm which generates no. calculate the molar values of the
A novelty company was producing 220,000 items for $3.80 each. Theysold these for $6.00 each. Recently, the demand for the items has dropped to180,000 units at that $6.00 price. The company can reduce production to 180,000units. Each unit would cos..
An engine block with a surface area measured to be 0.90m2 generates a power output of 55 kW with a net engine efficiency of 35%. The engine block operates inside a compartment at 157oC and the average convection heat transfer coefficient of 60 W/m..
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