Apoint charge q is at the point x = 0, y = 0, z = 0. an imaginary hemispherical surface is made by starting with a spherical surface of radius r centered on the point x = 0, y = 0, z = 0 and cutting off the half in the region z< 0. the normal to this surface points out of the hemisphere, away from its center. calculate the electric flux through the hemisphere if q = 7.00 nc and r = 0.100 m.

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?

Around steel bar, made from material with a yield stress of 750mpa, is loaded so that it has stresses co locations of maximum normal stress and maximum shear stress. use maximum shear stress and maximum distortion energy theories to calculate the safety factors for initial yielding failures.

Different between boring and turning?