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A symmetric sphere, of radius a and mass M, has its centre a distance b (b > a) from an infinite plane containing a uniform distribution of mass σ per unit area. Find the gravitational force exerted on the sphere.
a spherical balloon contains 2 kg of water at 230 degrees c 400 kpa the specific volume is 0.5951 m3kg. the balloon
Discuss why the analysis led to your selection in step 2 and whether you would change any of the criteria or weights.
During operation the surface temperatures are known to be T1 = 25°C, T2 = 60°C, and T3 = 70°C. What is the net rate at which radiation is transferred to the cover due to exchange with the absorber plates?
A steel cylinder with an internal radius of 50mm is designed to carry a maximum stress of 400 MPs. It is subjected to an internal pressure of 80 MPs.(i) Determine the required wall thickness.
It is proposed to manufacture glass beads of 0.5mm by spraying them in 20 degree C air and allowing them to harden as they fall to the ground. Assume that the initial temp of the glass bead is 500 degrees C. The bead air heat coefficient h=324 W/m^2K..
a hot-wire anemometer is a temperature-based instrument for measuring velocities in a flowing gas. the key component of
warm air is contained in a piston-and-cylinder device oriented horizontally as shown below. the air cools slowly from
a 1.5 ton crate is hoisted by three steel wires. Each wire is 1/4 in in diameter and each wire carries one-thired of the load. Determine the stress in each of the wires.
Gasoline flows from a 0.25 m diameter pipe in which the pressure is 250 kPa, that contracts into a 0.125 m diameter pipe in which the pressure is 100 kPa. If the pipes are horizontal bad viscous effects are negligible, determine the flow rate (Q). (G..
a carnot heat engine receives heat from a reservoir at 900c at a rate of 800 kjmin and rejects the waste heat to the
An ideal duct carries water (incompressible fluid) from a height of 10m to 20m. The pressures at the entry and exit points are at 1000 Pa and 2000 Pa respectively. Calculate exit velocity if the velocity at entry is 10 m/s.
For points A- G, compute the elevation head, the pressure head, the velocity head, and the total head. Plot these values on a sketch similar to that shown in Fig. 6.7.
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