Which is an invention that improved safety for railway passengers? a - refrigerated rail cars b- pullman sleeping cars c- time standardization d- air brakes

The correct option is "D": Air brake for the railway system was an invention that improved the safety of its passengers. The power braking system which was patented by George Westinghouse in 1868 operated by means of compressed air. This air brake system which was adopted universally became very safe and effective for preventing freight as well as passenger trains' accidents.

Air brakes improved the safety of the railway passengers  

Further Explanations:

Air brake were designed by George Westinghouse on 13th April, 1869.The modern air brakes used in railways are designed from the air braked designed by George Westinghouse, which have compressed air as an operating medium. It is also termed as fail safe air brakes.

In the air break compressed air exert pressure on a piston in the cylinder, which is connected through a mechanical linkage to shoe brakes. The shoe brakes rubs on the wheel of the train, and thus slows down the train by creating friction. The pressurized air from compressor is transmitted from car to car of the train through hoses and pipes beneath each car. The main problem is that if there is leakage in any of the pipe, it will result in the loss of pressure and thus will reduce the force on the brakes. This can easily create a situation of runaway train.

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1. Establishment clause would

2. Elizabeth Cady Stanton is most noted for?

Answer Details:

Grade: High school

Subject: US History  

Chapter: Air Brakes

Keywords: George Westinghouse,Air brake, piston, cylinder, mechanical linkage, shoe brakes,friction, pressurized air, compressor,hoses, pipes, leakage,runaway train Universally.

separation of powers, therefore, refers to the division of government responsibilities into distinct branches to limit any one branch from exercising the core functions of another.   the intent is to prevent the concentration of power and provide for checks and balances.  

the traditional characterizations of the powers of the branches of american government are:

* the legislative branch is responsible for enacting the laws of the state and appropriating the money necessary to operate the government.

* the executive branch is responsible for implementing and administering the public policy enacted and funded by the legislative branch.

* the judicial branch is responsible for interpreting the constitution and laws and applying their interpretations to controversies brought before it.

forty state constitutions specify that government be divided into three branches:   legislative, executive and judicial.   california illustrates this approach; "the powers of state government are legislative, executive, and judicial.   persons charged with the exercise of one power may not exercise either of the others except as permitted by this constitution."

while separation of powers is key to the workings of american government, no democratic system exists with an absolute separation of powers or an absolute lack of separation of powers. governmental powers and responsibilities intentionally overlap; they are too complex and interrelated to be neatly compartmentalized. as a result, there is an inherent measure of competition and conflict

minnesota:   minnesota house research,   separation of powers: when statutes and court rules conflict, 2005