Explanation:
85% efficiency of simple machine means that with 100% input, the machine will give a work output of 85%. EXPLANATION: The efficiency of a machine is the ratio of its Mechanical Advantage to its Velocity
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Answer:
Mass media refers to a diverse array of media technologies that reach a large audience via mass communication. Print media transmit information via physical objects, such as books, comics, magazines, newspapers, or pamphlets. Event organizing and public speaking can also be considered forms of mass media.
Explanation:
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Answer:
Its safer to wear mask all the time and wash your hands