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How to make a simple vacuum pump
Secure a bicycle or automobile hand pump. Open the pump and delete the piston. Un- screws the bolt that holds the leather washers. Reverse the washers by turning them over. Change the washers on the piston and insert in the pump cylinder. A pump of this sort will serve to do a lot of simple vacuum experiments
What a molecule is, and the difference between molecules and compounds? A molecule is made up of two or more atoms combined chemically. The atoms can be of the same element, as
TO SHOW WHERE AIR MAY BE FOUND 1) Plunge a narrow-necked bottle, mouth down into ajar of water. Slowly tip the mouth of the bottle in the direction of the surface of the water
Precautionary Measures Against Ionising Radiations The following guidelines are suggested for experiments using low activity radioactive materials: (1) Avoid skin contact
The simply-supported uniform beam shown in the ?gure below supports a mass m at a distance aL from the left support. Assume that the beam is relatively mass-less compared to the ma
Geocentric Universe of the Ancients: The earliest ideas of the Egyptians and Sumerians about the universe may seem strangeto us. The Earth appeared flat 2nd solid tg them.
nature and scope
Explain ABO Blood Grouping System As the name suggest, this is based on the presence or absence of 9 antigens A and B, on the surface of RBC. If either of these antigens is pr
Kwashiorkar: This disease was first recognised in 1935, in African children and it is named from two words of an African dialect, meaning first and second, i.e. sickness th
Answer the following questions. Show all work. 1 . Carbohydrates = _____ kcals/g Proteins = _____ kcals/g Fats= _____ kcals/g Alcohol= _____ kcals/g Nitrog
Explain the Duodenum The first part of the small intestine is called the diodenum. It is about 10 inches in length. At the mid-point of the duodenum, there is a common opening
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