How to understand W = fs in the simplest, most popular and most vernacular way? Search this question on Baidu: Why is the electric power calculation formula p=ui? When I saw w = fs in the third paragraph of york young's answer, I couldn't understand it. Baidu w = fs. In the earliest times, there were 22 Phoenician letters, among which there was no u, only v, and no w. Around the 11th century, people combined two letters v to create the letter w, so at the earliest time: w=double v Later, for convenience. W/w, w/v both represent concentration. Concentration can be understood from the bottom up as the ratio of two substances (that is, solute and solvent under the common concept). The specific w/v of the latter unit depends on industry habits and actual needs. For example, if a 50l substrate solution is prepared for production, the solvent must be certain.
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