Acircuit consists of a resistor r in series with an inductor l. when subject to a step input voltage v at time t=0 the differential equation for the system is (di/dt)+(r/l)i=(v/l) what is: (a) the solution for this differential equation, (b) the time constant, (c) the steady state current i?

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

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.