How does a transformer work?A transformer is based on a very simple fact about electricity: when a fluctuating electric current flows through a wire, it generates a magnetic field (an invisible pattern of magnetism) or "magnetic flux" all around it. The strength of the magnetism (which has ...
State the principle of conservation of energy. State the Archimedes Principle. State the law of reflection? Explain the principle and construction of a hydrometer. Explain the postulates of the special theory of relativity. What is a lever? State its principle. Answer the following question. What...
The western Balkans represents an area of significant topographic and environmental heterogeneity, harbouring high species and intraspecific diversity. Similar genetic and distributional splits observed in unrelated species have suggested some common features in their glacial response and biogeographic history. ...