The 50mm diameter cylinder is made from am 1004-t61 magnesium (e = 44.7gpa, a = 26x10^-6/°c)
and is placed in the clamp when the temperature is t1 = 15°c. if the two 304-stainless-steel (e =
193gpa, a = 17x10^-6/°c) carriage bolts of the clamp each have a diameter of 10mm, and they hold
the cylinder snug with a negligible force against the rigid jaws, determine the temperature at which
the average normal stress in either the magnesium or steel becomes 12 mpa.

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?