1. बरसते बादल iam मैं ज़ैद हूँ

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?