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Driving a boat by surface tension
Secure some gum camphor at the drug shop. Cut two or three boats from stiff paper, every about 2.5 cm in length. Cut a notch in the stern large sufficient to hold a small lump of gum camphor in contact with the water without letting it fall out. Float your boats in a large pan of water.
what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?
Making a precision reflecting telescope It is fairly beyond the scope of this book to include the intricate details for mirror grinding and testing. Though, some teachers may w
Lifting the water surface Bend the pointed end of a pin or use a piece of fine wire to make a hook. File the point of the hook unless it is very sharp. Put your eye on a level
Laboratory Safety Codes: BIS has prepared the following three codes (in the form of small books) regarding laboratory safety: i) Code of safety in microbiological laboratories
Primary source from plants for humans and animals
From the start of this course, we have emphasized the importance of research in shaping our understanding of human behavior and mental process. Several major studies and social psy
Which type of ripple marks would you expect to find on the floor of a standing body of waterion..
High voltage power supply
The Moon, the Earth's Companion What do you norrqally observe about the Moon? Itshinesbrightest, whenever present in the night sky. It seems to go through phases and it seems t
Name the six forms of prejudice that Brislin discusses and illustrate each with a South Africa example; 1. Red-neck racism - a typical form of this prejudice is Julius Malema
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