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What simple machines were used to build the great wall of china?
Simple Machines allowed the builders of the Great Wall of China to build more quickly and efficiently. Machines such as levers and inclined planes allowed the amount of energy spent to do the work to be decreased. Other machines such as pulleys allowed objects to be transported up and down the wall with greater ease. Wedges were incorporated in the hammers that the Chinese used to pound the earth and all the materials of the Wall together.
What is the alternative to a plumbing roof vent?
The alternative to a plumbing roof vent is an AAV. This is an Air Admittance Valve, a simple spring loaded ABS fitting that serves exactly the same function as a roof vent, except that it does not penetrate the roofing. I used 4 of these while re-plumbing my mobile home, three under countertops and one in the wall behind toilet. I'm very happy with their performance and even happier at having less holes in the roof.
What is the interaction between Science technology and business How do these interactions affect industrial growth Discuss with suitable example?
Science and technology greatly affects business in a way that business uses products of science and technology to thrive and develop because of the technological advances that have become prevalent. These interactions affect industrial growth because industries rely upon science and technology for its equipment. For example, if scirnce and technology did not come up with a machine that could automatically stretch saltwater taffy, makers of the taffy would use the old method of slamming it into a nail embedded on the wall and it would be difficult to mass produce therefore disabling the in this example, the saltwater taffy industry. answered by: NKMC
Is it better to have a high or low resistance across a circuit breaker?
A circuit breaker is supposed to protect the more valuable component the circuit is connected to. Too low a resistance, a minor glitch (spike) will break the circuit and stop the device from working. Too high a resistance, no glitches, no matter how large (a child sticking a paper clip into the wall sockets, for example), will break the circuit and the device (child) may get damaged. Each circuit will have a purpose (power load), and the circuit breaker should be chosen for that purpose with some tolerance. A free standing closed circuit breaker should have no resistance across its internal contacts. The main purpose of a circuit breaker is to protect the conductors that supply the load. If the current going to the load becomes greater that the amperage rating of the wire the circuit will open thereby saving the conductors from damage. Once the load current is below the wire rating ampacity, the breaker can be reset for normal operation.
Egress Window Installation?
Since a basement has only one entrance and exit, by OSHA definition, your basement is a confined space. Entering it technically requires an entry permit and is a hazardous environment. (think about it. If a fire breaks out at the top of the stairs, how would you get out?) An egress window solves this problem by being able to be opened in an emergency to allow exit to ground level. A shaft with a retaining wall and built in ladder rungs are required on the outside of the window. For added security, a grate that opens from inside can be fitted over the top of the shaft and secured from the inside.
What is adiabatic and diathermal wall?
the temperature that is within the system closed by adiabatic wall is called adiabatic wall temperature
How does entropy change in an adiabatic process?
In an adiabatic process, entropy remains constant.
What is the difference between adiabatic and isentropic processes in thermodynamics?
In thermodynamics, adiabatic processes do not involve heat transfer, while isentropic processes are reversible and adiabatic.
Is melting process is adiabatic process?
An adiabatic process in the opposite of a diabatic process. The adiabatic process occurs without the exchange of heat with its environment. A diabatic process exchanges heat with the environment.
How does enthalpy change during adiabatic expansion?
During adiabatic expansion, enthalpy remains constant.
What is the definition of diathermal wall in thermodynamics?
A diathermal wall is a boundary between two systems that allows heat transfer to occur between them. This means that energy in the form of heat can pass through the diathermal wall, allowing the systems to exchange thermal energy. In contrast, an adiabatic wall does not allow heat transfer.
Is it possible to have entropy generation in a reversible adiabatic system?
No, a reversible adiabatic system is also known as isentropic.
What is the rate of adiabatic temperature change in saturated air?
The rate of adiabatic temperature change in saturated air is approximately 0.55°C per 100 meters of elevation gain, known as the dry adiabatic lapse rate. If the air is saturated and undergoing adiabatic cooling, the rate is around 0.5°C per 100 meters, referred to as the saturated adiabatic lapse rate.
What does a sudden burst of cycle tire represent the opsions are 1.isothermal 2.isobaric 3.adiabatic?
adiabatic
A change in temperature without an accompanying change in the amount of heat present is called what?
It is called adiabatic or an adiabatic process.
What is the rate of cooling as you increase in elevation?
The rate at which adiabatic cooling occurs with increasing altitude for wet air (air containing clouds or other visible forms of moisture) is called the wet adiabatic lapse rate, the moist adiabatic lapse rate, or the saturated adiabatic lapse rate.
What is a adiabatic purpose?
I'll assume the last word was 'process'. Adiabatic processes are those that proceed without the temperature changing, whilst the pressure and volume do change. For practical purposes, sound waves passing through the air are adiabatic.
