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Calculate the density of a honeycomb structure composed of the following elements: The two 2-mm-thick cover sheets are produced using an epoxy matrix prepreg containing 55 vol% E-glass fibers. The aluminum honeycomb is 2 cm thick; the cells are in the shape of 0.5 cm squares and the walls of the cells are 0.1 mm thick. Estimate the density of the structure. Compare the weight of a 1 m × 2 m panel of the honeycomb compared with a solid aluminum panel of the same dimensions.
a gas in a piston-cylinder assembly undergoes a compression process for which the relation between pressure and volume
determine the heat transfer necessary to increase the pressure of 70 percent quality steam from 200 to 700 kpa
What are the three methods of performing the masking step in chemical machining?
Water is pumped from a lower reservoir to a higher reservoir by a pump that provides 20 kW of shaft power. The free surface of the upper reservoir is 45 m higher than that of the lower reservoir.
Ways to run cars on water are frequently touted on the Internet. For each of two different such proposals, write a three-page evaluation. In each evaluation, clearly state the claims made in the proposal. Then, using principles of thermodynamics, ..
Air enters a steady-flow turbine at 1600 K and exhausts to the atmosphere at 1000 K. The second law efficiency is 85%. What is the turbine inlet pressure?
Liquid water is fed to a boiler at 24ºC and 10 bar is converted at constant pressure to saturated steam. Use the steam tables to calculate H (kJ/kg) for this process, and then calculate the heat input required to produce 15,000 m3/h of steam at the e..
is there any difference between the stresses measured at the top of the beam and at the same location on the bottom of the beam?
A horizontal stream of water is directed at the windscreen of a truck , as shown in the drawing.The flow rate of the water is 8 litres/s and the diameter of the nozzle is 50 mm.
The soil in a polder consists of a clay layer of 5 meter thickness, with a porosity of 50 %, on top of a deep layer of stiff sand. The water level in the clay is lowered by 1.5 meter. Experience indicates that then the porosity of the clay is redu..
Application: Tunnels as waveguides. The following communication system is proposed for communication in mine tunnels to avoid the need for cables: The tunnel is used as a waveguide 5 m wide and 2 m high.
a single metallic crystal is oriented such that the normal to the slip plane and slip directions are at angles of 50
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