What is the difference between survival of the fittest and natural selection? “Survival of the fittest” is a popular term that refers to the process of natural selection, a mechanism that drives evolutionary change. Natural selection works by giving individuals who are better adapted to a given set of environmental conditions an advantage over those […]
How is pressure maintained in a reactor?
How is pressure maintained in a reactor? As shown above, mass flow meters are often used to control the input of various gases (and sometimes liquids) into the heated reactor containing the catalyst sample. A back pressure regulator is typically used on the exit of the reactor to maintain stable pressure control for the catalysis […]
How do you find the class interval in a frequency distribution?
How do you find the class interval in a frequency distribution? The steps in grouping may be summarized as follows: Decide on the number of classes. Determine the range, i.e., the difference between the highest and lowest observations in the data. Divide range by the number of classes to estimate approximate size of the interval […]
What does it mean when cats sit and stare at you?
What does it mean when cats sit and stare at you? If your cat looks relaxed and calm when staring at you, they’re looking at you for happy reasons and are likely just showing you affection. How do cats choose their human? Cats’ favoritism is just as unpredictable and individual. Your cat’s favorite person might […]
Which is costly brass or bronze?
Which is costly brass or bronze? While all three contain copper, the percentage is far lower in Brass and Bronze than in pure copper as alloying elements are mixed in. This reduces the cost of brass and bronze. Bronze is usually more expensive than brass, partly due to the processes required to manufacture bronze. How […]
What is the effect of temperature and pressure on a gas?
What is the effect of temperature and pressure on a gas? The pressure law states that for a constant volume of gas in a sealed container the temperature of the gas is directly proportional to its pressure. This can be easily understood by visualising the particles of gas in the container moving with a greater […]
Can you convert current to voltage?
Can you convert current to voltage? We usually say that the resistor converts the current IIN into a proportional voltage VOUT or it serves as a simple current-to-voltage converter – a linear circuit with transfer ratio k = VOUT/IIN [V/mA]. A bare resistor can convert current into voltage. How do you convert low current to […]
Does an MRI show broken bones?
Does an MRI show broken bones? MRI is sensitive to changes in cartilage and bone structure resulting from injury, disease, or aging. It can detect herniated discs, pinched nerves, spinal tumors, spinal cord compression, and fractures. What can an MRI see that a CT scan Cannot? Where MRI really excels is showing certain diseases that […]
Do Low flow shower heads save money?
Do Low flow shower heads save money? Low flow showerheads reduce both water and energy usage, since reducing the amount of water used by the shower will also reduce the amount of energy used to heat it. In doing so, low flow showerheads also reduce the amount of money spent on utilities. Are Low flow […]
What is the number 1 contributing factor in many crashes?
What is the number 1 contributing factor in many crashes? Number of Fatal Crashes Speeding is one of the most prevalent factors contributing to traffic crashes. The economic cost to society of speeding-related crashes is estimated by NHTSA to be $40.4 billion per year. What is the main cause of road accidents? How different factors […]