Asecond-order mechanical system has the transfer function :

g(s)= 1 = y(s) 0.15s2 + 1.4s + 128 u(s)

the system is initially at rest when a step-input force u(t) = 5u(t) n is applied.

a. show that the transient response will oscillate before reaching a steady-state response.

b. determine the oscillation frequency of the transient response in hz.

c. estimate the number of oscillations (cycles) before the system reaches steady state.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k