Which of the following is an example of a civil engineer demonstrating problem sensitivity? (Select all that apply.) Michiko reviews the latest spec changes from the architect on her project and realizes that a simple color change is going to require reordering massive
amounts of tile and slow construction to a halt.
Anne notices that the construction company isn't properly following the specified layout for emergency exits.
Nick had to leave his last firm because he felt the environment there was too hostile and he couldn't deal with it
Lewis resolved the conflict between the construction company and the client with his usual tact and diplomacy

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg. m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?