When using a computer, you should not keep your: shoulders and upper arms in line with your torso
wrists and hands straight (not bent up, down, or sideways)
O feet flat on the floor or supported by a stable footrest
O thighs perpendicular to the floor and the lower legs parallel to the floor

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?