Q1/ A soil sample of diameter of 38 mm and length of 76 mm has a wet weight of 1.6 N and a dry weight of 1.2 N. Determine:
a- The water content.
b- The degree of saturation.
C. The porosity.
d - The Bulk unit weight.
e. The dry unit weight.

At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.

Acertain flow of air (at stp) has a velocity distribution given by v i (in ft/s). if this flow is going through a 4 ft square area in the yz-plane (centered at the origin), what is the mass flow rate (in lbm/s)?

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?