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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
diseases caused by viruses?
Create a binary 0-1 Hop field neural network with 3 neurons and 3 stable states. Specify the weights and biases you have used, and draw the state transition diagram corresponding t
what is force?
Wave and tidal energy: Waves and tides are another source of energy which is perpetual and can be converted into electric energy, particularly where sea water can move into a n
Describe the history of rock cycle? We will follow the full rock history, or "life-cycle", of a piece of granite in the Sierra Nevada mountains of California. The life cycle of
Test for studying suitable chemical treatment for changing the chemical nature of iodine Reactivity of iodine is tested with 1. Water and, 2. Sodium thiosulphate soluti
Answer the following questions. Show all work. 1 . Carbohydrates = _____ kcals/g Proteins = _____ kcals/g Fats= _____ kcals/g Alcohol= _____ kcals/g Nitrog
Explain about the Biosphere Besides the above two types of factors, biosphere (the living environment) is another important active soil forming agent. The activity of living
What minerals attract lightning? Ans) Big structures and things that are metal attract lightning, also trees do. In fact, anything that is metallic having mineral may seem
Scientific and Technical Achievements of Bronze Age: The major technical advance that accompanied the rise of cities was the discovery and use of metals, particularly coppe
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