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1. How much clay must be added to 10 kg of polyethylene to produce a low-cost composite having a modulus of elasticity greater than 120,000 psi and a tensile strength greater than 2000 psi?
2. We would like to produce a lightweight epoxy part to provide thermal insulation. We have available hollow glass beads for which the outside diameter is 1/16 in. and the wall thickness is 0.001 in. Determine the weight and number of beads that must be added to the epoxy to produce a one-pound composite with a density of 0.65 g/cm3.
conventional ceramics have a fracture toughness of about 5 while advanced ceramics may have 20. determine1 how larger
an aluminium bottle weighs 10 kgs when empty and has an internal volume of 20 liters. it is filled with 5 kgs of
Problem 1: A two rocket is fired vertically from rest at s = 0 with the acceleration shown and the position axis s pointing upward. After 15 seconds the first stage A burns out and the second stage B ignites. (a) Determine the acceleration of the ..
steam at a pressure of 0.08 bar and a quality of 93.2 enters a shell-and-tube heat exchanger where it condenses on the
an ideal gas undergoes two processes in a piston cylinder device from 1-2 a polvtropic compression from t1 and p1 with
A uniform cantilever is 4 m long and carries a concentrated load of 40 kN at a point 3 m from the support. Determine the vertical deflection of the free end of the cantilever if EI = 65 MN m2
steam at 40?c condenses on the outside of a 5-m-long 3-cm-diameter thin horizontal copper tube by cooling water that
(1) Differentiate between the following briefly: (a) Microscopic and macroscopic approaches in thermodynamics (b) Reversible and irreversible processes
Many appliances, including ovens, stoves, clothes dryers, and hot-water heaters, offer a choice between electric and gas operation. Select an appliance that offers this choice
1. Provide a synopsis of the Jones and Shephard case study 2. Highlight three enterprise management causes/considerations and three project management causes/considerations for the situation. Include what seemed to be missing
Employing the ideal gas model for the air and ignoring irreversibilities within the tank and the turbine, determine the volume of the tank, in ft3. Heat transfer with the atmosphere and changes in kinetic and potential energy are negligible.
An airplane flying at 185 kts with heading 320? Towards a target 300 nmi (nautical miles) away, experiences a steady wind of 23 kts from 020? If the time, without wind, to fly to the target was t.
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