Immortalhd needs help

Question

anonymous · Answer

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

anonymous · Answer

what about his demonstration of the electrical equivalence of heat?

anonymous · Answer

it isn't here

anonymous · Answer

"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)

anonymous · Answer

Joules Law  equivalence of electrical energy and heat, was his first publication. 1840 and refined 1844.