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• Why do individual bolts relax a bit when first tightened? Name several factors that can increase the relaxation ? Which will tend to loose more preload after initial tightening, a short bolt or a long bolt?
• What are the implications of your answer to question above?
an egg can be approximated as a 5.5cm diameter sphere. the egg is initially at a uniform temperature of 8c and is
a regenerative steam cycle operates between the limits of 80 bar 540oc and 0.05 bar. if only one extraction from the
the main shaft of a particular machine is to continuously transmit 25.0 ft-lbs of torque say along the z-axis. it is
The engine dissipates a lot of heat which calls for a cooling mechanism. Explain the engine cooling mechanism
nitrogen gas at steady-state-steady-flow undergoes a compression provess through a well-insulated compressor. the inlet
Experiments have shown that the transition from laminar to turbulent conditions for flow normal to the axis of a long cylinder occurs at a critical Reynolds number of ReD,c = 2 X 105, where D is the cylinder diameter.
Determine the tensions developed in wires , and and the angle required for equilibrium of the 30-lb cylinder E and the 60-lb cylinder F.
Express in terms of Heaviside unit step functions the following piecewise-continuous causal functions. In each case obtain the Laplace transform of the function.
a crane is lifting concrete to a construction project where the acceleration of gravity is 31 fts2. if a 400 lbm
A wooden board AB, which is used as a temporary prop to support a small roof, exerts at point A of the roof a 57-lb force directed along BA. Determine the moment about C of that force.
A spring stiffness k= 500 n/m is mounted against a 10 kg block. if the block is subjected to a force of 1 KN determine the velocity of the block at s=0.3 m when s=0, the block is at rest and the spring is uncompressed. The coefficient of fricktion is..
motion with wind stress rotation and friction in the following you may use these values if neededmiddot density
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