What is the most sensitive type of spectroscopy? Among instrumental techniques, fluorescence spectroscopy is recognized as one of the more sensitive. In fluorescence, the intensity of the emission of the sample is measured. The reason for the high sensitivity of fluorescence techniques is that the emission signal is measured above a low background level. What […]
Are oil stains permanent?
Are oil stains permanent? The problem with oil stains is that instead of leaving a brightly stained area, they tend to leave a slightly darkened area that may be difficult to notice right away. This area darkens with age unless it is removed quickly. And if the piece of clothing and oil stain dry, the […]
What unit is coefficient of friction?
What unit is coefficient of friction? newtons What does a wheel and axle do? Wheel and axle, basic machine component for amplifying force. In its earliest form it was probably used for raising weights or water buckets from wells. Its principle of operation is demonstrated by the large and small gears attached to the same […]
Where is critical listening used?
Where is critical listening used? We can be said to be engaged in critical listening when the goal is to evaluate or scrutinise what is being said. Critical listening is a much more active behaviour than informational listening and usually involves some sort of problem solving or decision making. What is critical listening Where do […]
How do you magnetize metal permanently?
How do you magnetize metal permanently? Take two magnets put one North pole and one South pole on the middle of the iron. Draw them towards its ends, repeating the process several times. Take a steel bar, hold it vertically, and strike the end several times with a hammer, and it will become a permanent […]
Is there no noise in space?
Is there no noise in space? Unlike light, sound requires a medium to travel through. This simply means that in order to hear sound there has to be something for sound to travel through. In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this […]
What are examples of references?
What are examples of references? Book references: general form Author, A. A., & Author, B. B. (year). Book title. Location: Publisher. Author, A. A., & Author, B. B. (year). Book title. Retrieved from http://www.xxxxxx. Author, A. A., & Author, B. B. (year). Book title. Editor, A. A. (Ed.). (year). Editor, A. A., & Editor B. […]
What is chain reaction with example?
What is chain reaction with example? In chain reaction. Nuclear chain reactions are series of nuclear fissions (splitting of atomic nuclei), each initiated by a neutron produced in a preceding fission. For example, 21/2 neutrons on the average are released by the fission of each uranium-235 nucleus that absorbs a low-energy neutron. What is another […]
Where should you connect a voltmeter?
Where should you connect a voltmeter? A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. An ammeter is placed in series to get the full current flowing through a branch and must have a small resistance to […]
What does N stand for on a spring scale?
What does N stand for on a spring scale? The newton. (N) is the basic SI unit of force. The unit is named. in honor of Sir Isaac Newton. What are the different types of balances? There are three different types of balance: symmetrical, asymmetrical and radial. What are the 2 types of balances? There […]