Activity 2 Solve these problems correctly with proper solution. 1. A column of square cross section is subjected to a force of 6kN. If the width of the column is 25 cm, find the pressure on the column. 2.A small can weighs 1.23 N in air and has a volume of 1x10-5m3. How much will it weigh when completely submerged in water?3 3. The area of contact between an injection needle and the skin is a very tiny circle with a diameter of 2.54x10-3cm. If the needle exerts a force of 6.9x10-2N, what is the pressure N/m??Activity 3 Solve these problems below with proper solution. 1. Water flows through a 75mm diameter pipe at a velocity of 3 m/sec. Find (a) the volume flow rate in m3/sec. And lit./sec., (b) the mass flow rate in kg/sec. and (c) the weight flow rate in N/sec. (Note: Use the formula for Flow rate, Q=Av, mass flow rate m= pQ and for weight, W=gQ) 2. What is the rate flow of water passing through a pipe with a diameter of 20 mm and speed of 0.5m/sec