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The weight fraction of glass in a glass/epoxy composite is 0.8. If the specific gravity of glass and epoxy is 2.5 and 1.2, respectively, find the
1. Fiber and matrix volume fractions
2. Density of the composite
the acceleration of a particle is given by a -ks2 where a is in meters per second squared k is a constant and s is in
a power generator burns natural gas consisting of 30 ethane 60 methane and the balance nitrogen. the gas undergoes
Measurements indicate that boat A has twice the kinetic energy of boat B of the same mass. How fast is boat A traveling if boat B is moving at 30 knots? 1 knot = 1 nautical mile per hour; 1 nautical mile = 6,076 feet.
Repeat Problem 3-67 with the inside of the tube exposed to a convection condition with h=40 W/m2 · ?C. Check with an analytical calculation
A Pitot tube measures the total pressure on an airplane flying at sea level as 1.07 x 10^5 N/m^2. What is the velocity of the airplane?
Find the angular velocity and angular acceleration of the pulley at an instant when the bucket is going down at a speed of 20 cm/s and has an acceleration of 4.0 m/s2.
Determine the net work per cycle, in kJ, the power developed by the engine, in kW, and the thermal efficiency, where r is compression ratio and rc is cutoff ratio. Derive this expression.
hypothesis testing. think of a problemissue in your job or in life that can be addressed using a hypothesis test.
1. calculate the 1d atomic packing fractions or apfs in the 100 110 and 111 directions in the fcc structure2. calculate
The 25-kg bar has a centre of mass at G.If it is supported by a smooth peg at C,a roller at A and cord AB, determine the reactions at these supports.
a rotating machine runs intermittently. when it is operating it is rotating at 4200 rpm. the mass of the machine is 100
suppose you build a rural house where you need to run a pipe to the nearest water supply which fortunately is about 1
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