Which of the following to explain how hydraulic lifts work? a. archimedes' principle b. flow rate equation c. pascal's principle d. bernoilli's principle

Answer : C. Pascal's principle.

Explaination : Pascal's principle (well-known as Pascal's law) states that if a closed container contains a fluid at rest, then a small change in pressure at one side of the fluid is transmitted to each and every part of the fluid and also to the walls of the container without any loss. In a hydraulic lift, we need the same mechanism to work and so we take the help of Pascal's principle.

Hence, the correct option is C. Pascal's principle.

Correct answer is C

Explanation:

Defination of Hydrollic lift:

A hydraulic lift  is an example of multiplication of force by hydraulic press,  A multiplication of force can be achieved by the application of fluid pressure according to Pascal's principle.

Pascal's principal:

According to  Pascal's principle in a fluid  inside a closed container, a pressure change in one part of fluid is transmitted without loss to every portion of the fluid and to the walls of the container.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: