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1. Which of these is an experiment generally regarded as being first carried out by James Joule?
(Points : 1)
observing that objects increase in temperature when heated with fire
showing that friction slows down the motion of objects
measuring the temperature increase of water from doing work stirring it
testing the mechanical advantage of pulleys
what about his demonstration of the electrical equivalence of heat?
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"Measure the temperature increase of water from doing work stirring it" is the same concept as what he discovered. (conservation of energy / that heat and mechanical energy are two forms of the same thing)
Joules Law equivalence of electrical energy and heat, was his first publication. 1840 and refined 1844.