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Holding water in a sieve
Pour some oil over the wire mesh of a kitchen sieve and shake out the overload so that the holes are open. Cautiously pour water into the sieve from a pitcher, letting the water run down the side of the sieve. When the sieve is about half full, hold it over a sink or pail and observes the bottom. You will see the water pushing by the openings but the surface tension keeps it from running by. Touch the bottom of the sieve with your finger and the water should run by.
Evidence Favouring the Big Bang One piece of evidence comes from the expansion of the universe which we have already described. The expanding universe suggests that the matt
Fire Escapes : When a fire breaks out in a building, it is not unusual for people to panic. Sometimes flames can spread rapidly, especially if fanned by blow of air from open or b
Explain Myocurdial Ischemia and Infarction Myocardial ischemia (insufficient blood flow) or myocardial infarction (death of heart cells) reduces myocardial contractile force an
Effects of Global warming ñ Alterations in the Global Precipitation: A more warm atmosphere will contribute to enhanced evaporation from surface waters and leads to the more
Optical specificity Some enzymes exhibit absolute optical specificity for at least a portion of the substrate molecule. For example, the enzyme maltase catalyzes the hydrolys
Satellite : Satellite transmission is one important symbol of revolution in communication technology. Besides transmitting picture and sound over long distances, it has revoluti
Describe the factors which decide the broad area of scientific activity?
1. Define potential and kinetic energy. 2. State the first and second laws of thermodynamics. 3. Explain how organisms tend to defy the second law of thermodynam
Checking Breathing and Pulse : Before attempting to resuscitate a casualty, it is essential that you check his/her breathing rate and pulse. You can cause problems if you attempt
1. The output of a single neuron is given by y = f(w 1 x 1 +w 2 x 2 +w 0 x 0 ), where x 1 and x 2 are inputs, x 0 has the constant value 1, w 0 , w 1 and w 2 are parameters
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