Does a 4 stroke engine need mixed fuel?

Does a 4 stroke engine need mixed fuel? 4 cycle engines do not need oil mixed with the gas to provide lubrication, since it has oil in the crankcase. Two cycle engines have to have oil mixed in the gas to provide the lubrication needed, since there is no oil in the sump. Is 4-cycle […]

Which is better Frye or Daubert?

Which is better Frye or Daubert? Under Frye, the scientific community is essentially the gatekeeper determining evidence admissibility. Using the strict standard, if the scientific community finds a method or theory acceptable, the court must admit the evidence. While Frye offers a bright line rule, Daubert provides courts with flexibility. What is the main difference […]

Why were Russian peasants so poor?

Why were Russian peasants so poor? The reforms in agricultural also disappointed the peasants. By 1900 around 85 per cent of the Russian people lived in the countryside and earned their living from agriculture. The nobility still owned the best land and the vast majority of peasants lived in extreme poverty. Why was there a […]

What are 3 uses of beryllium?

What are 3 uses of beryllium? Beryllium is alloyed with copper or nickel to make springs, gyroscopes, electrical contacts, spot-welding electrodes and non-sparking tools, according to the Royal Society of Chemistry. Other beryllium alloys are used in high-speed aircrafts and missiles, as well as spacecraft and communication satellites. Why is beryllium so expensive? Beryllium is […]

Is 1 degree Celsius cold or hot?

Is 1 degree Celsius cold or hot? In the Celsius scale there are 100 degrees between the freezing point and the boiling point of water compared to 180 degrees in the Fahrenheit scale. This means that 1 °C = 1.8 °F (check the section about temperature differences below). What is the coldest Fahrenheit temperature? The […]

What 3 components make up most magmas?

What 3 components make up most magmas? Magmas can vary widely in composition, but in general they are made up of only eight elements; in order of importance: oxygen, silicon, aluminum, iron, calcium, sodium, magnesium, and potassium (Figure 3.6). Which component of magma is the highest in value? Felsic magma has the highest silica content […]

What is a Si number?

What is a Si number? The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived. Is […]

What is the change in internal energy of the system when no heat is absorbed by the system from the surroundings but work is done by the system what type of wall does the system have?

What is the change in internal energy of the system when no heat is absorbed by the system from the surroundings but work is done by the system what type of wall does the system have? adiabatic What is thermally conducting walls? Consider two systems A and B which are separated by a conducting wall. […]

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