1) A BS cone penetrometer test carried out on a sample of boulder clay gave the following results:
Cone penetration (m)
Moisture content (6)
15 9 17.1194 209 22
320 314 318 360 370
Determine the liquid limit of the soil.

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?