A hydraulic brake system is shown below. The area of the piston in the master cylinder is 6.40 cm2, and the area of the piston in the brake cylinder is 1.75 cm2. The
coefficient of friction between the brake shoe and wheel drum is 0.50. What is the
frictional force between the brake shoe and wheel drum when a force of 44 N is
exerted on the pedal?

Fb, brake force, is the normal force exerted on the brake shoe

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

Which of the following statements correctly describes a transformer?