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 is magnetic flux? explain faraday's law of induction.

Which safety measures should you follow during a thunderstorm? check all that apply. (a) avoid touching anything that conducts electricity. (b) avoid touching a person who has been struck by lightning. (c) go outside. (d) keep your computer turned off. (e) stay out of water. (f) stay inside.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.