Suppose that a firm wishes to create an endowment for a laboratory. It will earn an interest of 10% per year. Cash requirement
are
estimated to be $650,000 (to establish it), $80,000 per year
indefinitely. Also $90,000 every fourth year and $70,000 every ten years for equipment replacement
indefinitely.
What amount of endowment principal (CW) is required to support remaining cash
requirements?

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?