Question

according to pascals law, the pressure in a closed hydraulic system is (the) same _____.
only at the input piston
only at the output piston
only at the lines
everywhere in the system
brake hydraulic systems can be used to transfer both force and _____.
weight
lights
engines
movement
changing the sizes of the input and output cylinders can change the amount of _____ applied.
force
time
limit
size

Explanation:

First Question:

Pascal's law states that in a closed fluid - containing system (like a hydraulic system), the pressure exerted is transmitted undiminished throughout the fluid. So the pressure should be the same everywhere in the closed hydraulic system. The other options (only at input piston, only at output piston, only at the lines) go against the principle of Pascal's law.

Brake hydraulic systems work based on hydraulic principles. They are used to transfer force (to apply the brakes) and also movement (to make the brake components move so that the brakes can engage). Weight is a measure of the force due to gravity and is not transferred in this way, lights are not related to hydraulic systems, and engines are not transferred by brake hydraulic systems.

From the formula related to hydraulic systems \(F = P\times A\) (where \(F\) is force, \(P\) is pressure, and \(A\) is the area of the piston/cylinder). According to Pascal's law, the pressure \(P\) is the same throughout the system. If we change the area \(A\) of the input or output cylinders (by changing their sizes), since \(F\) is proportional to \(A\) (when \(P\) is constant), the force applied will change. Time, limit, and size are not directly related to the effect of changing cylinder sizes in this context.

Answer:

D. everywhere in the system

Second Question: