What are the advantages of laminar flow? The principle of laminar flow was first discovered in 1960; laminar flow workstations are used to move air safely through laboratory enclosures. They direct unrestricted airflow towards sterility, prevent contamination, and reduce potential turbulence. What is the principle of laminar flow? A laminar flow unit creates dust free […]
Is a banana turning brown a physical or chemical change?
Is a banana turning brown a physical or chemical change? (d) A banana turning brown is a chemical change as new, darker (and less tasty) substances form. What type of chemical reaction is rotting fruits? enzymatic reaction Why are bananas gassed? “Bananas make other fruit ripen because they release a gas called ethene (formerly ethylene),” […]
Why is self-interest bad?
Why is self-interest bad? Selfish individuals may act in a manner that’s detrimental to others. Having a healthy self-interest doesn’t preclude caring about others. As a result, you may feel guilty about acting in your own self-interest. The reasoning is that taking care of your needs will invariably have a negative impact on someone else. […]
What is the meaning magnetic pole?
What is the meaning magnetic pole? Magnetic pole, region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth’s magnetic field orients itself in a north–south direction. Unlike poles of different magnets attract each other; like poles repel each other. What are the two types of […]
How far can a rubber band stretch?
How far can a rubber band stretch? This means that if I stretch the rubber band a distance of about 20 centimeters (that’s around the breaking point) then there would be 1.8 Joules of energy stored in it. How much force can a rubber band withstand before breaking? The rubber piece will stretch, but not […]
What virus attacks the nervous system?
What virus attacks the nervous system? Viruses that infect the central nervous system (brain and spinal cord) include herpesviruses (see also herpes simplex virus infections), arboviruses, coxsackieviruses, echoviruses, and enteroviruses. What happens when your immune system attacks your nervous system? Guillain-Barre (gee-YAH-buh-RAY) syndrome is a rare disorder in which your body’s immune system attacks your […]
What are the most common watch batteries?
What are the most common watch batteries? The most common watch batteries are V371 (quality men’s watches) and V377 (quality lady’s watches and most cheap made in china movements). LR44/V357 is a very common pocket calculator battery. CR2032 is the most common lithium button cell (3V) and is not part of this cross reference. What […]
Why do sound waves need air?
Why do sound waves need air? Sound can’t be carried in the empty vacuum of space because sound waves need a medium to vibrate through such as air or water. However, because the particles are so spread out, the sounds waves they produce are at such a low frequency, humans are incapable of hearing them. […]
What are three parts of cell theory?
What are three parts of cell theory? These findings led to the formation of the modern cell theory, which has three main additions: first, that DNA is passed between cells during cell division; second, that the cells of all organisms within a similar species are mostly the same, both structurally and chemically; and finally, that […]