A rectangular lot was measured using a 50-m steel tape at 30 oC. If the recorded length and width of the lot are 197.56m and 105.63m respectively. Determine the Error in the area, if the coefficient of thermal expansion is 0.0000116/ oC and standard temperature of the tape is 25 oC.

Estimate the vapor pressure, air pressure, relative humidity, and air density at a height of 1800 m into the atmosphere. The total pressure is 101 kPa, air temperature is 25°C and the dew point temperature is 15°C near the ground, the lapse rate 7.5°C/km, which is constant for both air temperature and dew point temperature. The gas constant R is 287 J/kg-K and constant with respect to altitude. Vapor Pressure at 1500m, in Pa Round to the nearest whole number Add your answer

Infiltration Question 4: Calculate the volume of water (Mm³) evaporated from a catchment of an area of 60 hectares per year if saturation vapor pressure is 80mm of Hg and relative humidity is 70%. The velocity of wind at 25 m above the ground level is 21.5 km/hr. Take K = 0.4.

Problem 3 ( 20 % ) What is the pressure difference between the air pipe and the water pipe ? WATER, dH0 9 g00 N/m3 30cm AIR 40 CM Hg (S,G. = 13.6) %3D