A large company in the communication and publishing industry has quantified the relationship between the price of one of its products and the demand for this product
as Price = 150 − 0.01 × Demand for an annual printing of this particular product. The
fixed costs per year (i. e., per printing) = $50,000 and the variable cost per unit=$40.
What is the maximum profit that can be achieved if the maximum expected demand.
is 6,000 units per year? What is the unit price at this point of optimal demand?

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?